I had a Perception Torrent for a while, for kids and friends on desert river trips like Deso and San Juan. It was ok for that. Stable as all get out; you could paddle with a kid on the bow, etc.
But it was really a pig. Heavy to get on the roof. Very wide (ie, stable) and sort of awkward to paddle due to the width. Plus your butt is in the water.
The thigh straps lock you to the boat more and keep you from getting bounced out and let you lean and get it up on edge, turn faster, brace, etc.
I would agree with other posters, on inflatible can be more versatile, easier to pack, carries gear, and is just as easy to get back in if you flip.