He could probably get away with playing this one. While playing one of the necks of this guitar, he would just use the force to play the others ones simultaneously, if needed.
I think he would play any guitar which was cleverly modded into looking more like the Death Star. This one could be a great starting point. Plus, just like Vader himself, it’s batshitinsane. Actually Vader was a pretty level headed guy. Most of the time.
I see Darth Vader as more of a bass player. I don’t see him rocking out and power sliding all over the stage, but I can see him cooly laying down a funky groove on bass.
Yeah, Vader’d play bass. He’d play this one. Now this one? He wouldn’t play it, but, yes, he’d steal Paul McCartney’s and keep it because he’s a bastard like that.