Looks like this will be helpful but only in a few apps – Fonteer Review

I just downloaded Fonteer to use with Assembly... but at this point you have’t suppported it yet. The developer of Assembly is a fabulously smart guy and I hope you will quickly work with him to incorporate Fonteer collections into My Fonts in Assembly. When that happens, I’ll be a five star reviewer!
Review by thevmcoach on Fonteer.