38 inch sleeves times two, plus chest width, would have a reach of at least 90 inches, which, if he isn't a six-foot tall gibbon, would certainly make him stand out like a turd in a punchbowl. NOT a good thing when trying to sneak around the jungle and point guns in the faces of sitting Senators.
OTOH, it wouldn't be hard for him to pick his ass AND his nose at the same time, with the same hand.