I am not able to make out for sure whether they will work on our beloved A10's. I contacted them about this and the friendly chap promised to find out, and get back to me, but alas! I would think they would work by installing the Hall sender on the original type tacho gear? They look nice, and are cheaper than the real stuff.
A later addition: I searched the web, and found one rather negative review of these new instruments, although from a Commando rider. One would think they had tested their products before launching them to the public. I find it disturbing that the company does not offer bike-specific fitting instructions and set-ups. I would reckon A10 owners would be a real target for these clocks.