Your device should work as soon as Sam found the time and the means to backport these drivers, which he’s already looking into. The only extra bit needed to support your device (which is basically the same as mine) would be to add its USB ID (from the commit you mentioned). The drivers themselves should be the same.
At least Sam will now have access to at least two testers as soon as he gets the code backported from the 4.4 kernel 
Cheers