Eirene,
I'd like it. My problem on both my chars is that a single line respec didn't do what I wanted to do which was to juggle 3 lines.
I have two chars I want to change following the next patch but I will probably respec Joshll. I need to lower aug and mend to raise my cave. Mythics respec won't let me do two lines so I need a stone as well. (1.62 is a 40% buffing nerf to shaman now that end regen takes conc - I'll hit the 20 buff limit faster now. So I'm going to become a cave shaman like everyone else.)
If something would pop up that made me change my mind, then I think I would make ezuin a darkcarver runie, which would again make me adjust two spec lines.
And if I didn't use it, it would stay in guild. I'm pretty sure I'm going to respec Joshll though

Damn Mythic. So I'd really appreciate the stone if you still have it. It will save me a trip (or ten) to the glacier.