... that said, full finger gloves are documentable to the 12th century: (Fécamp Psalter (KB 76 F 13, fol. 5v), c. 1180, via larsdatter.com
.. and Pliny the Younger in the second century AD mentioned some kind of glove:
(or at least some manner of hand covering translated as "glove" anyhow)A shorthand writer constantly attended him, with book and tablets, who, in the winter, wore a particular sort of warm gloves, that the sharpness of the weather might not occasion any interruption to my uncle’s studies
So personally, I think I'm somewhat okay with modern (ish) gloves in ME. The more primitive version you picture wouldn't be out of place to my mind either.. certainly for those like rangers who don't have armies of tailors at their disposal.
(edit: I gotta say all that belt bling is tres cool. Doesn't fit what I'm doing I think, but I like it! )