Like I said, you don't need a brake test light to pass MOT, and I just fitted the fog light for the MOT and removed it straight after, transferring that switch control to another function.
That MXL unit is velly velly nice indeed, but I decided against it in the end as it would require either a big diameter wheel to see the display properly (giving the bus effect) or one of the 'cut' D-shaped wheels (which I don't like and would prolly need a 22% rack to use). The Mychron 3 is cheaper and has a smaller display which is all clearly visible with a 260mm MOMO. I think you can download templates from the AiM website which you can print, cut out & stick on to see how it would look on your dash...... would definitely do that before committing - I did it with the M3. Will also tell you how much dash tubing you will have to remove in order to fit it in there.
Yamaham @ Keevil