Merrick outfit concept

Not that I don't like the usual stuff, but I was trying to find a new outfit for Merrick. As the story have a Dieselpunk thematics, I just thought I should try some clothes that seemed appropriate for the context. I kinda liked that too, but Merrick has gotten a little too "militarized" for my taste. Buuut, he's usually having to change his garments and travel in disguise (being an world-class thief and a mercenary), so, what the hell...
The hat was still a bit of a mandatory item for men in the early XX century (natural ambientation for Dieselpunk), and I thought a leather beret seemed appropriate for him. But, with some more classy garments, a fedora can do the trick as well.