I acquired the set of Adeptus Mechanicus from the 'Skulz' program many years ago, shortly after they were released, around the year 2K. I had done some painting for a GW Outrider, and in exchange for that he was able to acquire a set at one of the GW conventions. I guess Outriders could buy metal minis by weight at the time :)
I painted the Artisan many years ago as part of an LPL entry. Sadly, I picked a non-metallic-metal scheme and I wasn't so great at it then. The problem was trying to match that cartoony NMM for the rest of the set, years later!