Here's the Skarlock after assembly and undercoating. I don't bother undercoating just one model at a time, so I assembled and undercoated my Bane Thrall Officer and Standard as well.
The next increment after Battlebox games in the upcoming Journeyman League is 15 points. The Cryx Battlebox comes with 14 points worth of models, so there are several choices for units at 1 point. After reading a few suggestions online, I opted for the Machine Wraith - which I will be proxying with the Skarlock.