Ok so- I know that Wilson’s whole fingerless-glove-sleeves-thing look is total fanon and not a legit thing that he wears, at least as far as official Klei art goes.
BUT…I think I have a reasonable excuse for why he would wear something similar at the very least.
For engineers, mechanics, and even folks who work around/handle hot liquids, there’s something called Heat Sleeves. If you’ve worked in fast food, you’ve probably had to use them to clean out the deep-fryers (I have)
Look familiar, right? Sure, I don’t necessarily think they had them in the 1920s, but DS hasn’t always had an air-tight seal on historical accuracy. So I think it’s fair to argue that Wilson is wearing something like this to protect his arms since he seems to be a mix of a chemist and engineer/inventor.
Functional and Fashionable