I wouldn't mind one of these, even if it's just an addon and a traditional keyboard is still required to type. The problem is, it takes getting used to, the feel of a new setup. I wouldn't even know if I'd like to use one of these until I'd actually tried it out. That's the main reason I wouldn't buy one of these. Even though it's only 30ish, well worth it if it works out well and it helps me play the game, it's not worth it if I just can't get used to it.

Too bad there's no "trial" version of keyboards/other products. The "trial" versions of non-software products usually consist of "Credit Card required, Shipping fees not included, Must be returned by yesterday in order to receive a refund."