I have one on my MkI (2013).
I don't think there's a chassis difference with the II.
Fit was a PIA, but worked.
Comfort of pretty good. But I've only spent say 100 miles at a time, 200 in a day, so far... Like yesterday.
Overall I'm pretty happy, but also happy I didn't pay full price. I'm not sure it's much better than the OEM Cafe seat I had.