I have personally never been a fan of Evolution OT's. To be honest though I can't even remember the last time I tried one, so it might be somewhere between now and ten years ago.
That being said, I might have prejudice against most sort of ot's which isn't oldschool with a client from 7.1 to 7.7.
I want to say that I dislike the concept, but that would'nt be completely fair.. So, instead I say that I believe i'm not a fan of it, since I never had any interest to try one.