Sorry man. Never used EZ drummer. Not even sure what it is. Glad that you're finding GT Central helpful. Did you download the free windows software on that site yet?

if not, there is a guy there called Gumtown. Look in his signature, he has a link to the software he has built for the GT10. It's analogous to Line 6's Gearbox. Not quite as sexy of an interface as Gearbox, but, pretty decent none the less