Because of the relatively poor snow conditions this week, I've been practicing switch a lot the last couple of days. It takes a day or two of practice to be able to ride green runs while linking turns cleanly. I think by the end of the week I'll be able to ride anything short of tough blacks in switch.
Biggest problem I'm having right now is that I find my edge transition is delayed when going from heelside to toeside. Kind of a reluctance to commit. I can overcome it by concentrating on it, and eventually I'll be confident enough that it'll be automatic.