All the time!Use and abuse!
I dont have one on my guitar cause i wont use it anyways and it only adds to maintenance!!!
When I can I love them but they are a lot of maintainence sometimes with the weather here in WV. One day it's 90 with 100% humidity the next it 40 with freezing rain and ice. It's brutal here sometimes man!
First Idle was Herman Li... I don't think "use" is strong enough a word, more like abuse!
I use my trem arm occasionally, but I usually just grab the bridge directly instead.