So do the skins based on the shadow isles(like Headless Hecarim) going to stick aroound or are these just harrowing skins too.
I'd like to know as I'd instabuy it if it's only going to stick around for a short time but if it's permanent I'd rather wait.

Oh, and for anyone who doesn't know what I mean, here's the link:http://www.surrenderat20.net/2012/10/10-17-pbe-update-shadow-isles-patch.html