I ordered one of these. This is indeed one that might have either of two chipsets, but there seem to be Linux drivers for both flavours, so provided they've not added a third kind I should be in with a chance.
Felt better than yesterday as long as I stayed indoors; any time I went outside the headache and sniffles started to return. Lunch plans sadly derailled by sickness but had a nice time round at House for a bit anyway. Going to risk karate and (if that doesn't exhaust me too much) the pub this evening.