Ok tested last night - and i can't even get it to connect!!!
Works great with my Lumia 930 and Stream 7, but just times out trying to connect to the SP3. Very frustrating.
Seems that an update in Jan with new display adapters broke it working. I deleted the driver, but still cant get it to work. So at least you can get a picture.
Out of interest, which display adapter driver is yours working with??