yea, i have some. Just have them as elites and it's a choice. Gave them a pain-boy and a waaagh! banner.
They are crazy!

I put a customised zhardsnark and it eats things alive! Make sure to gets some trukks to mount some boyz and get some anti-tank (like your deffkoptas) or tank bustas. I got some they are really good. Put them in a trukk with a rokkit moves 6" a turn but kills those tanks!