I'm on an N800 and almost never use the thumb virtual keyboard. Then again, I use the stylus for very nearly everything (only exceptions are like Pause and Play in gPodder and Canola).

It's very disappointing to me that Maemo5 is not going to support the N8*0 line (do I understand that right?) and if it turns out that it does support the N800, I'd be bummed if it supports only the thumb virtual keyboard and not the stylus keyboard.