[QUESTION]

Okay, let’s look at it not from the point of view of practicality, but from the point of view of logic. Is such an outfit logical for this character?

No. It corresponds to the image of this character. Approximately the same as armored bras correspond to the image of elves, for the reason indicated by Loken in the Skype chat: 3

Not the easiest version of Roman armor. Nevertheless, part of the elbows, as well as the legs, are open.

He has a shield, which successfully covers all of this, and a spear, thanks to which he can keep the enemy at a distance. And notice that his chest is still covered.
As an alternative explanation, his legs are open because injuries there are not fatal, he covers one arm with a shield, but he must be able to work well with the other. And his chest is always completely covered. In absolutely any case.

Added after 37 seconds
The cop was faster