Pre-emptive strike: It's subjective, but it's also Friday... ;)

Inspired by this great question and related to this great question, I have decided to buy a chorded keyboard. (A chorded keyboard, by the way, is one with a reduced number of keys, that must be pressed together, in chords, to give all the possible characters etc. - see wikipedia)

Being a programmer means that the keys I use regularly are likely different to a regular Joe (a lot more semi-colons for a start), so I was wondering if any of my fellow programmers had tested a chorded keyboard for use on the battlefield of code?

Being a nerd, I'm also interested in the extent to which I'd be able to customise my chorded keyboard. (Macros? Shortcuts?)

Edit I'm beginning to suspect that no-one has heard of these, let alone tried one. So we're all talking about the same thing, here's an example: Twiddler 2.1