Well, these are two of my three Hummers with GPK (gunner protection kit) now painted (one .50 cal and one grenade launcher). I undercoated with Tan Earth, highlighted with Dark Sand and followed up with a Strong Tone wash and a final Iraqi Sand dry brush. I really like them.
Where is the third one? Well, I wanted to show how easy it is to clean up a printed model.
Starting state with tools (yes they are well used and not for use in operating theatres). Six minutes later......
Almost ready to paint, just some very minor trimming left. Plenty of bits to chuck away. And, yes it really only took six minutes. You just have to trust that the actual components are quite strong and you can just lever off the supporting material.
By the way, the plastic takes paint nicely, there is no trace of any release agent or grease so you almost don't need to worry about undercoating.
From my point of view I am now sold on printed models and I heartily recommend Butlers Printed Models. I'm looking forward to getting more stuff off them.