Just when I had become comfortable with my paper based notebook system, my new job gave me a BB. Being the simpleton that I am, I played around with it and figure the best way to do GTD on it if I am going to do it, is to use the notes function. I really only need 6 categories, two sets of; project list, next actions, waiting for, one for personal and one for work. In about 30 minutes, I figure, I can retype them into notes I figure if I combine this with a notebook, which I process regularly I should be ok. For some reason, I still like to have a "hard" calendar open in front of me which has my personal appointments and my weekend committments of it. The upside is having them on the BB, the downside is having to get things into it, which is harder then just having the paper with you and adding to a list.
I guess I am going to take the plunge and see if I can go electronic. The old binder will always be there if it doesn't work. Thoughts are welcome.