first off, i wouldn't want fritschis on a ski that wide, being that big it seems to me like (not sure if this is totaly true) that it would put a lot more torsional stress on the already not so strong fritschis, maybe look into the duke and possibly the marker tour
the setup no matter what binding will be pretty damn heavy, just keep in mind whatever you get you have to lug around in the bc
skinning with a skis like the pontoon will be kind of hard, having rocker (and reverse sidecut?) will give you a whole lot less skin contact, which means less traction.
If you are really considering the pontoon as a touring ski i would suggest you look into the marker duke and maybe just BCA trekkers
No. You go touring on sunny spring days, not during a storm. For a touring ski you should have something that is manageable in spring conditions, soft slow snow, and the transitions between sun and shade.
Depends what you're looking to do and how long your tours are going to be. I love skinning on my Pontoons. If you're in powder, they're actually easier to skin in because they don't sink so much, saving a lot of energy (and in pow the skin/snow contact with rocker isn't an issue). If the weight is on your feet, they don't feel that bad. It's when you throw them on your back to start hiking that they're not so great. If you want a touring ski for all conditions, they're probably not your best option. But if you know you're going to be skiing great pow and your climbs are in the 1-2 hour range, they might be just what you want.
Line makes some burly light skis, thats what i currently tour on. ON3P makes skis with a lightweight bamboo core. ideally you want a light ski with a bit of metal in it to help hold your touring bindings in because they run on a smaller mounting pattern, and usually alot of your weight is on the toe, and the fatter the ski the more force to tear your toe piece apart (fritshis are notorious for the metal breaking at the mounting screws on the toe, dynafits are notorious for tearing out of skis when you send on them)
I am mostly reiterating what other people have said. 1) Reverse camber skis do not tour well because the area of skin-snow interaction is minimal, especially in hard spring snow. 2) If you are doing significant touring you don't want to be lugging something that heavy up the hill. 3) DO NOT get trekkers, they break and suck to tour on, unless you can simply not afford a nicer binding. Sorry I know that wasn't your question, but I saw that someone posted suggesting them and I wanted to dispel any myth that they are nice or even kind of work. 4) It is true that a fat ski is nice because it doesn't sink as much while breaking trail, but a normal fat ski (100-115 underfoot) will work just fine. 5) Why must you tour on a reverse camber ski?
they are actually not a bad option if you do a lot of touring and have a quiver for touring.
obviously, they are not the tool to use in spring or hard conditions but...
for storm touring, slackcountry, and in the days after a storm, fat reverse skis are awesome for touring. sometimes it may seem like the skintrack is too narrow w/ fatties, but you will honestly find yourself the one breaking trail (and its easy w/ fatties). having a fat reverse reverse touring ski opens up options as far as terrain selection and lets you have a ton of fun.
the downside is weight. its worth it on the way down though. also, check out the new frischis. they're stiffer, and have a much beefier heel lock than past models. dukes are sweet to but having to take the ski off to get into ski mode sucks.
on3p billy goats are sweet for touring, i rocked them this season with dukes on them. i also have a pair of skis that are 105 underfoot with dynafits and weigh like 6 pounds so if you're looking to bridge the gap then check out something like 110 underfoot with slight rocker.
you want a ski that can charge all conditions because sadly sometimes when you tour you don't get blower pow the whole way down. you also need something relatively maneuverable depending on what types of faces you're climbing. i've been in situations where a big heavy ski would make a no-fall zone kickturn a lot more stressful. also with heavy rocker and strange taper like toons you get much less edge hold on sidehill ice so you're more prone to sliding backwards or losing an edge, which best case scenario makes you really tired due to lost traction, worst case scenario you die