There used to be a "traditional" club in the News House in Nottingham, about 1970-74, which wouldn't let floor singers use guitars, but they didn't stop Martin Carthy when they booked him.
I use electric guitar with our blues band - I'd play an accoustic from choice, but the band nag me about "image". I've got the electrics lying about the house from when I was young, anyway, but I only play them for band gigs. You are better off practicing on an old accoustic with a relatively high action, because then you play better on the easy action of the electric. If you don't know how to get your sound from the gear you are using, you have to plug in at home to find it, but this can annoy the neighbours. I still rehearse with the band on an accoustic with a transducer, and do anything not involving a drummer on accoustic.
Re: Fenders v Gibsons - it is easier to get a good sound out of a Gibson, but the good Fender sound is achieved by using the tone and volume controls - for a Strat, set the volume to around 6, turn the tone down to take the top off, muck about with the amp controls and find out why Eric Clapton and Gary Moore went back to the Strat after years with Gibsons. Fenders don't have to sound thin and jangly. That said, Mark Knopfler always drags out a Les Paul for "Money For Nothing", and that 345 mentioned above reminds me of a similar guitar I had use of 30 years ago - I've always wanted one.
Billy Bragg has made a career while playing a Tele since he was 17. Leon Russell had to show Freddie King that he could sound good playing accoustic. Sleepy John Estes was famous for playing electric in his one-room shack with no electricity - he used to plug into the neighbour's house if he had visitors who wanted him to play. Don't ask about Charlie Jordan! Use what sounds good to you - people got feet to vote with!