Wet Okole makes excellent neoprene seat covers; I recently had some installed for my 2006 HCH. At the time they didn't have the plans for the back bench but they did the two front bucket seats and added a free console cover. They fit well and they don't obstruct movement at all -- the seats adjust normally and the console can be opened and slide forward armrest-style just like before with no problems. The seats have slits to allow the side airbags to open and they test airbags with a bunch of manufacturers' seats to make sure it doesn't impede them.

I'll upload photos sometime later, maybe in a week.