If we were on Blabbermouth we'd be having a fight about whether he wrote that song about Cliff or just wrote it after he heard the news of Cliff's death.
I think those things are just for looks. I see people come out with them but they never use both. I think the only person I've seen actually switch necks is Vai.
Oh maybe he did. But It's gotta be a very rare thing. When DD comes out with his doubleneck bass he only uses the one. Kinda disappointing lol.
I remember Vai I think it was showing off with a triple neck heart shaped guitar years ago. Whether it was skill or just wank would be a matter of opinion though.
My daughter is sitting here going through her YT recommended list. So far we've had Dio, Rainbow, Iron Maiden, Helloween, Alice Cooper. And here I was thinking I would have to manipulate their computers to have decent music