I did this as well, and I actually love it. But even when my fingers "forget" and jump to where ESC usually is, it is there. I use vim a lot and was very worried about the lack of ESC. But it's been a non-issue for me -- surprisingly.

Everybody always claimed the iPod was way too expensive, yet it kept selling even in the presence of other lower-priced competitors. With this thing, you get a full iPod and more, so the price isn't THAT unreasonable. ($100 difference between 4 and 8 GB is a bit much tho... the Nano's difference is only $50)