Started using Leatherique about a year ago - mostly for my '35 MG vintage race car's seats, then started using it for the RRS seat cleaning. The Rejuvenator worked amazing to breathe life back into the '35 seats(well, they're probably about 40 years old after the resto - well before my time) as they were pretty dry. It hasn't helped from the red leather dye coming off on my race suit, but it has helped them feel like real leather again.
The Leatherique cleaner seems to work very well on the RRS. I have the ivory interior and the seats are getting a bit crapped up again, so it's time for a cleaning and I'll plan to keep using the Leatherique. It doesn't seem to protect the leather, but I'm not sure a protectant is necessarily good. I'm sure there are other forums for leather care.
Just my couple o' cents on Leatherique.