I picked up 2 squads of these minis at the Horus Heresy Weekender in Feb this year, i was instantly in love with them! And as a bonus, they're dead easy to paint!
I knocked out these four in a few hours and they're more or less done. A word of caution for any other Magos out there thinking of adding these to their army; keep the mechandrites tight to the body! I had to reposition them 3 times because they were just so gangly! Get the pose right first then stick them on. Sound obvious, but it did cause me a lot of headaches during the build!
The finished product will be along soon!