I'm using gkrellm 2.2.1 and artwiz fonts. Nothing special to it. Just select them from the box.
This made me wonder if I'd missed a version and now I see 2.2.2 has come out. There are a couple of changes in the themes Changelog, but I don't know that they'd screw anything up.
Doesn't sound like 2.2.2 is exactly a massive required upgrade, so I think I'll stick with 2.2.1.