I know that dude, and I agree 100% with what you say.
When I said I want to hear what's going on while playing (I guess that's the ridiculous statement you ment) I ment the following:
I have yet to come across ear protection that reduces the volume BUT isn't anoying when doing vocals (I also do those), you know what I mean?
I'm willed to spend more money on decent ear protection, but I havent found something that avoinds the strange effect you get when you sing and have something in your ear.
In ears seems to be the best solution, but isn't worth the trouble for most venues we play.
So if there's some protection designed for musicians that prevent such effects, I'd be glad if you recommend me some