I think we're following a very similar approach actually, except I am more wedded to my Assault Squad (in part because I got some very decent free gear for him from my pre-order bonus package).
You know, I gotta say I really like this campaign. Maybe I will tire of it if it goes on too long but so far it has eben an absolute blast, and manty times better than DOW's original campaign (a standard RTS job but too short for only one race) and much better than the Dark Crusade/Soulstorm metamaps (because every mission feels consequential and has attached briefings. debriefings, voice chatter between your characters etc.) So far, anyway.
Impressed.
Just a shame about that grenade thing.
Oh, the Imperial Guard in action are amusing...