I've had a play with a SkyQ LNB today, I can confirm it's FBC with a LO frequency of 10.410GHz. They are Full Band Coverage, ie no band switching, so the full range can be covered with just 2 feeds from the dish (H + V). This was a dedicated SkyQ LNB and not the hybrid, that would need some signalling sent to the LNB to switch it to Q mode, otherwise all 6 outputs are standard Universal.

I tested with an Ultimo4k with a FBC tuner, it works with a single polarity but as yet, there is no way to tell the 1st input it's a single polarity, eg H or V only with the 2nd input being the opposite polarity. The 2 output standard SkyQ LNB has a single H and a single V output