Well, thanks to an ongoing final project for my web development class, I've had precious little time to work on the gloriously yellow bikers.  But I did manage enough time to get this guy started:

He'll be my force's commander armed with a relic blade and storm shield - both of which are magnetized (the shield detaches at the arm).

The roman style helmet crest comes from an Eldar Dire Avenger helm, while the white-resin knight-like helm is from a Forge-World Grey Knight tank commander bit I just had laying around.

I really can't wait to have the time to get this guy (and his command squad) done.