| Jason,
I would definitely study with Ernst Glerum if the oppourtunity presented itself. Every time that I've seen him play live with the ICP or Available Jelly, I've thought him to be a really marvelous player. I don't know anything about his teaching, but I would guess that a man who has spent so much time driving the band along side Han Bennink would possess a unique take on jazz and improvisation. I'm pretty sure he's a gut player which might also be of some relevance to you... Be interested to hear how it turns out.
Aaron | 
