With the new WebOS update you are now able to pair non-WebOS phones with the touchpad. I've got my Blackberry working as a phone device, however, is it possible to use the blackberry keyboard on the touchpad?
I dont know for definate but i would say no. The phone treats the touchpad as a hands free device (speaker phone) and nothing more.
Im guessing to make that work you would need to patch the blackberry as well as the touchpad.
I could be wrong im not a dev!