I tried out the Colby and the James (had no reason to try out the West, it's 110 underfoot and there was ice all over the mountain that day). The Colby is pretty fun, symmetrical, low spin weight (that's what those things in the tips and tails do, there's pretty much no material there so it lowers swing weight), camber, really good pop. The James was ok, I wasn't a huge fan, it's also symmetrical (although the guy had the bindings mounted back...he said it was cause the people at like Stratton and mountains like that, i.e. rich people, don't want to try center mounted skis, and since it's less of a park ski than the Colby he didn't mount them center), rockered, but not by much. Both skis are pretty soft, and I'm pretty sure they're sizing is WAY off (the 180 Colby's were like a cm longer than my friends 172 No Times while we were waiting in the lift line), so I'd get a size bigger than you normally would, or if you need a 180+ ski, these probably won't be for you.
They are, however, extremely well built ski (what else would you expect from Kastle, they make really good race skis), but I don't know how the durability on the skis are at all (especially since they were demos so you couldn't hit rails with them...and even if you did you would die cause the edges were like razors). Since Kastle is mainly a race ski company, I feel like they might have some problems with durability (race ski materials weren't meant to slam into metal... ).