Nope. I ran with plain Unity for the best part of a week and found it didn't give anything of value over the classic interface. The performance issues forced me back to the classic interface though. Not had any performance issues with classic.

I'll give Unity another go when I upgrade to 11.10 in January (3 month delay gives them time to fix the worse bugs). I'm not spending my time trying to make it work nicely if I can just fall back to classic to fix things.