I am not having any major issues myself. The skins 4.4.7 or higher run.
The only quirk I see is the Logo is a little out of whack on some skins.
The text color can be a bit of a pain. Twighlight can show a blue background with black text.
But IVY LEAGUE seems to be working pretty well, and that is the default for now.
The problem with all of this is, Invision. If they didn't release new updates every stinking time I turn around, it may be a little more manageable for Sherri. If they would allow for some sort of universal skin development, or a way for these skins to self u