Nice results. I have that kit but haven't had the chance to use it yet as my front seats are covered in lt grey sheepskin covers. I have the BMW kit and plan to use it on my rear seats for the annual BMW CCA concours I'll be attending 8-25.
I use Armour All leather care gel as a routine touch-up on my seats every 3 weeks or so. With a light grey seats and with my car being a convertible...I need a quick maintenance product. Works great for my needs as a routine light cleaning/conditioning.
(Armour All is laughed at by everyone, I am aware of that 100%. It works fine used regularly. That is all.)
1988 325i sedan (Cirrus Blue Metallic, Silver Grey Leather)
2011 128i convertible (Blue Water Metallic, Grey Leather)