Well it depends. I think this sort of costume is best used for historial purposes and not convention based cosplay. Same thing boils down to any military based costume that's meant to be a prefect reinactment. I feel like that sort of costume and the time and effort it takes to do well would be better used for historical reinactment and/or tours.
You could do your costumeing, and be helpful and historically informative. (Also if you get a paying job the costume could be a tax write off lol)