Roxa's foray in to AT boots is their X-series lineup, consisting of the X-ride, the X-face, and the X-turn. They all fit about the same - which is fairly high volume, so downsize at will with these.
They are relatively heavy for AT boots compared to others, but still aren't half bad, and perform quite competently.
The X-Face and the X-Ride both have rounded, rubberized AT soles that are great for scrambling with, and Dynafit style tech binding fittings, but you can interchange them to attach DIN soles for your alpine skis. The X-Turn is only available with Alpine soles, and Roxa claims they have a stiffer flex - which, I honestly don't believe they are much stiffer than the XFace and XRide...
They are all 3 piece design boots, with a central tongue. The X-Ride has a 3 buckle system with a central ratchet, the X-Turn has a 4 buckle alpine style buckle system, and the X-Face has a 4 buckle system with a ratcheted 2nd buckle across the instep.
These boots aren't particularly stiff. They're by no means some hard charger or anything, but they're plenty for most guys out there who don't need a Race-Flex boot.
The range of motion on these isn't what you'd expect for an AT-boot, but definitely a lot more than any alpine boot out there.
For skiers who aren't particularly aggressive, but want a solid do-all boot, the X-series boots are great. They'll be fine in the park with alpine soles, and you can have a great backcountry/sidecountry experience with these, too. They won't be the lightest or the stiffest or anything, but they get the job done well, and offer an alpine fit.