So I tried the Trezor with the Electrum 2.0 wallet today and it worked like a charm. Glad to see another wallet service that has implemented the Trezor successfully. I'd like to see if you guys could make any progress with getting Mycelium or Wallet32 to implement it next 
curb your enthusiasm : ) there are a few issues if you play with electrum long enough. p.ex. it hangs when creating new wallet (like one with password, one without password), wait at least the bugfix release 2.0.1 is out. but yes, it looks very good and they did great job.
I've been using electrum development version from git for about half a year now with trezor. I only once ran into a serious issue and that has been fixed a long time ago.