Thanks all. I do have some 'scatter' terrain bits to add. It's a-comin'. That's 24" x 24" for instant action, and you definitely need cover. I'll post close-ups ASAP.
Mercs offers 2d game mats. Not gridded though, as they use the stat cards for movement and firing templates.
I'll do a BatRep once things settle down, and I've finished my proxy CCC. (Heresy troopers)