Many is the time I carried stacks of Fire elemental Glyphs to use when soloing five mans, only to switch on raid nights.

But then again, having my own inscriber, it was easy to do with the one ink per glyph at the time.

I can see me doing the same thing, esp. as Ualaa suggested Vanishing being so cheap. In fact I can't think of any reason why any class can't switch glyphs depending on boss fights.

Well that is unless there is a reason on cata bosses that would prohibit it. CC glyphs maybe?

Stephen