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)
2013 320i sedan Sapphire Black Metallic, Black/Black