Re: Any guitar players who've all but abandoned their 6-strings?
I play tons of mandolin in bluegrass, swing and some rock contexts.
I also play electric and upright bass and guitar in all sorts of settings.
To me these are just tools and I use whatever the situation calls for or whatever the person who requested my musical presence in their scene wants me to play.
Regardless, the most fun I have playing music is an even split between mandolin and electric bass.
I get a huge kick out of working with a solid bass player in bluegrass and creating a solid rhythm section with a tight chop, while also being able to play melody when I have my lead opportunities.
As for bass - similarly - doing so alongside a strong drummer can be really fun in that you can support the song with groove and sometimes can go outside the structure of rhythm to accentuate the song with bass harmony lines.
I will never stop playing guitar though - it's the foundation of my music skills. I write songs on guitar and I always enjoy flatpicking or playing leads on a tele or strat with a good band.
Mandolin, Guitar, Bass
Acoustic, Electric, Eclectic
Swing, Boogie, Bluegrass,
Psychedelic, Blues and Rock