| Yeah, I've heard several guitar players pick up a bass and play like that. So what? There's some famous bass shredders out there, sounds cool for a little while, but do you really want to listen to them for very long? John Patitucci plays great 6-string, but i wonder if that's really playiing bass.
Maybe I'm just a traditionalist, but to me bass playing is more than playing lots of notes way up on the neck. True bass playing is an art unrelated to guitar technique. It's a completely different concept. It's a groove that moves the song along on its way, relating to the groove the drummer has going. Etc.
Solos are cool, but i think it should be a bass solo, an expression of the bass's space and purpose in music. | 
