Thanks guys.
I've been aware of the Rii thing, looks cool on its own merits, but it's definitely not the class of product I'm looking for. The use case isn't starting movies on an HTPC or informing game-lobby dignitaries that "lol ur ghey", it's typing emails and stuff like that. Plus, old man, poor eyesight, thick fingers, used to banging away on mechanical typewriters etc.
Schmolch, so it does sound like the K400 is what I'm looking at. I did notice its squeezed right-hand ISO keys, that's going to be a problem (I'd need those for letters of the alphabet). Looks like they did a reasonable narrowing of the US layout, but noticed too late they'd painted themselves into a corner for fitting ISO layouts in the same chassis. I'll probably have to push the shop to get me an American version.
Ripster, I remember you being very happy with the Google TV keyboard. Since you have both, how do they compare? They look extremely similar to me except for the "island keys" business - does it make a difference? The K400 I tried had stiffer keys than I'd imagine (based on looks) the Google TV kbd to have.