I used to use Gliptone, it's good. But now i use Raceglaze Leather Balm and it's even better.
Look at LTT. Far superior compared to the likes of Glipitone but more expensive too. The best leather is kept for audis so VW leather is pretty crap. I know one forumite had more wear in his leather seats after 20k than on his bmw at 50k.
my edition 30 drivers seat is starting to wear,a company called capital seating who make fitted seat covers are borrowing my passenger seat next week so they can make a pattern and then will be forsale shortly
would rather have seat covers when i go mountain biking,some fancy polish isnt going to keep the seats clean