Hi Squeak
Interesting posting..
I made the same test with my new GM drumkits too, is really siple to create one Drums demo.
Just select ONE style and let it play only the drums track ( without press the chords)
Then in editor style you change ONLY the drumkits and start to play the same style, with the all patterns.
here you can hear some of the my new 23 GM drumkits demos: http://www.lionstracs.com/demo/styles/drumsdemo.mp3

here are the all new drumkits available: http://www.lionstracs.com/store/pro-gm-drums-p-164.html?osCsid=539269cfe39a04c60b2a83d2331e813a

I'm interesting to hear the T2 drumkits too