I rode my new SB 180s today for the first time. I was in the midwest, so it was mostly hardpack. I'll be in Colorado all of next week, and I'll update with a full review after my trip.
Pros: The SBs are really light with tons of life. They are stiffer than what I'm used to, TMs, but still soft enough to psuedo-butter. The sidecut is huge, and they ski like it. They're not too quick (after all, they're 93 in the waist), but they turn great and are by no means sluggish. Really fun to carve, even better to charge. They're really smooth switch. I suck at carving switch in my TMs but the SBs were easy. GREAT in the park. The large platform gives you tons of stability, and they have tons of pop on takeoff.
Cons: I'm not sure if they come with any factory wax. I waxed them, skied all day, and they were very dry. So I waxed them again, and they're still dryer than my TMs which were waxed a week ago. When I flexed them for the first time (without bindings) I heard a crackling noise as if some part of the ski was breaking. This noise did not reapeat during the seecond flex. Maybe it's a "breaking in" sort of thing like softball bats, but it's disconcerting. I'm going to email Liberty; I'll post what they say. Since they're made to handle some powder, the tips are relatively soft and chatter at fast speeds on hardpack, but this can be expected from this type of ski.
Right now, I would rate them a 7 on a scale where:
0=my dead, 10 year old K2 Black Magic Two's
10=Dynastar Candides, the best ski ever made.
So all in all, I'm pretty impressed with the SBs, but they are yet to be seen in their natural habitat. I'll have a full review at the end of the week.