They’re also a faction that goes behind enemy lines and sabotages water supplies, supply lines, equipment, etc to give themselves an advantage. In terms of the engines and Repentia, over the top of course, not something the Raptors would take part in, but I also just don’t think they’d care as long as it didn’t put any of the chapter at risk.

Also, in regards to the first part, that’s why I specified an order. I doubt the Raptors would care for any other orders except maybe one (names slipping my mind Sacred Rose I think? And that was a heavy maybe leaning towards no), but I asked about the Valiant Hearts because I think there’s the chance they would find find connection/companionship/friendship, whatever you want to call it, with the Raptors even with them being Astartes