#2
a lotta people will use bass amps sometimes to get their tone, the fender bassman is loved by guitarist ( even though some will argue that it was made specifically for guitarist and the name is a crock)
#3
Tony Iommi used to plug into the bass socket of his amps

Queens of the Stone Age use bass amps as well as guitar amps
My Strat/Modded '69 RI Mustang
Ovation 1117-4 c. '75
Fender Blues Jr. [JJ Power Tubes, White Grille, Warehouse Speakers Greenback Clone]
BOARDZILLA 2.0

#? of EHX Guild
#4
Sometimes I find guitars will sound better through a bass amp. Not all the time but yeah. It's not uncommon to do that.
Quote by Jearl

...dont play Fender just because its Fender.

Gear:
Ibanez SZ520QM
Peavey Rotor EXP
Squier Bullet (heavily modified)
Mesa Roadster Head & 2x12 cab
#5
I know a lot of guitarists use bass amps and get good sound out of it, but i was at that show and everyone i know (including some non-musos) thought stockdales guitars sounded crap. dont be fooled by the recording it sucked monkeys.