I decided on a Razorback for the retinue. I wanted to use something that could double as a vehicle for the Deathwatch when the campaign is done, which eliminated the various IG options. Plus, psybolt ammo.
I used the Forge World Rhino doors and brass etch set, plus embellished with a few bits from the bits box to really pimp it out. The whole think was primed black, then airbrushed from the top with a dark gray. This gives a slight gradient, and makes the tank look a little less flat.
The Deathwatch generally ride to battle in a Drop Pod. This is, of course, awesome, although they often don’t survive to see turn two. I should probably adjust my tactics.
The Drop Pod got the same gray airbrush treatment as the Razorback. I wanted to make this thing look Deathwatchy. Since the thing is five-way symmetric, it took most of the small brass etch insignia to get it done. Five each on the door, above the vent thing on the sides, on the top, and on the floor in front of each pair of harnesses.
Again, the weapon is magnetized, and both storm bolter and missile launcher are painted up.
Updated July 2018 with improved images.