Does anyone play a five string bass with a thumbrest? I'm talking about the ones that Fenders used to have. I like the feel of resting my thumb on something more solid than the low B string and I'm curious if anyone else feels the same way. I've only seen these things on four string basses, though. Can anyone chime in on the subject? Pros, cons, etc? Thanks! Here's a picture of a Fender American Vintage '75 Jazz with the thumbrest on the E string side.