The Sloth Demon's guide to Everyday Earthswear
Step 1: Get yourself assigned to Central / Eastern Europe. Somewhere around there, can't be bothered to check where.
Step 2: Profit - because you only have to have one kind of attire throughout your stay, and you don't even have to bother hiding your true nature. People will just roll with it! They even dress up sort of like demons, and I'm fairly sure they do it all year round. I mean, I could check, but also - sloth demon. Could check, will not.
Anyway, just get your hands on a sheep, get its fur - if you're short enough, you don't even have to bother modifying it after you miracle it off of the beast. If you're tall, have a backup sheep, like I have.
You can keep your face, horns and all, insulate your possible reptilian companion, repurpose your work pitchfork (it's not like they're gonna miss it), and you're all set. You're even killing two birds with one stone - you're belnding in, acing your assignment, and you're practising the sin of sloth, what with ditching the whole fashion question.