I thought it was an interesting idea and I've tried it, but it doesn't really work for me.
What you get is a mix where everything sounds just as loud as each other, and that's rarely even close to what I'm after.
Maybe it could work as a starting point for some genres, but to me I just found the process very irritating and unmusical, only to find myself ending up in a place where I didn't want to be.
ymmv of course
Cheers,
Erik