Looking for a GM.
I backed Spheres of Power's Kickstarter, high enough to get a copy in TreeFlesh™ format when it came out. Even got files to use it in Hero Lab. Never got a chance to do anything with it, though.
I don't have the martial version (Spheres of Might, I think it's called), and if I used it I'd pretty much want to use it exclusively. (Well, maybe include the non-caster core classes.) Not sure what I'd do, though, since I'd pretty much have to make up all the NPCs by hand and rejigger any spellcasting critters.