I still keep my N900 in my murse, together with my Galaxy Tab. Anywhere I go (well except on the beach, fearing both get stolen). I just can't separate from my little black brick, even if everything I do as a user gets done well and quickly on the Tab. I really don't know why, can't justify it rationally. If at a point I felt the urge to code some lines I could do on debian in a chroot on the Tab, but... dunno.
Oh, and my N800 and N810 stay at home for music and sporadic hacks. I can't just sell these things.