Frying, I would think, would blow-off all the acetic acid. Would malt taste linger? Dunno. It might be lost in the fatty batter. I recall a series of posts years ago re trying to make smoked salmon devilled eggs. All kinds of combinations failed to taste salmony/smokey seemingly because the fat in the yolk hid the flavors. As yolk was reduced, the flavor appeared. Might be the same with a fried batter. Maybe better to make a malt vinegar glaze and toss the battered and fried stuff in it like a buffalo wing.