Zimm, I don't think Guns n Roses or Metallica were ever or could ever be classes as spandex bands. Motley Crue? Oh yes.
Axle had his time in spandex, just before the leather pants got the nod. Guns were groupies of Motley. When Motley went to leather (more like pleather) for Shout at the Devil, Guns followed suit. But pictures exist, I'm sure of it! Sounds like howework for the weekend for me!