It's not an either-or. It's a "which is best for a given situation". I have an N810 _and_ a Bluetooth keyboard. Pulling out my iGo while I'm standing on a bus and just want to do a few quick things that involve typing? If I am forced to choose between a virtual keyboard and an external keyboard, I'll instead "think outside the box" and buy a different device. One that suits my needs, instead of forcing me into artificially constrained input mechanisms that don't cover my use cases.

If I'm in a meeting and wanting to take notes, or need to do a LOT of typing, that's when I pull out the iGo.

Choose the best tool for the job. Give your users a rich set of tools to choose from.