I would say sure go ahead and wear a cape.
But let me make a suggestion, just wear it a bit hanging or wrapped to keep the cold out, just don't look too precious and or like an attention wh__e, if you know what I mean.
Tell you what, in my work environment it can get rather cold, and as I am dressed in scrubs I have no problem with wrapping a blanket around my shoulders. It is not an uncommon sight worn bundled or loose.
I realize it is in no way a formal environment, but the point I am making is that is worn as a functional piece.
For that matter, I have no problem while seated at a show or on a plane, with throwing my jacket over myself to keep comfy.
So don't worry about it too much, who knows, maybe you'll attract some weird vampire chicks.
Not to offend any vampires that may be reading, I meant weird in a good way.
SO JUST WEAR IT, OK ? ! ? ! ? ! ? ! ?
Please post some more pictures and also of the vampire chicks.