It looks a little weird in the beginning and he didn't even bother changing the string arrangement but it sounded okay.
our drummer is also a lefty. he plays crazy good travis picking upsidedown. also plays banjo upsidedown too.About 20 years ago all my buddies would gather in a friends garage and jam. A mutual acquaintance came by to hang out and he jumped on the drums and made the owner of the drums look like a newbie I'd known him for years but never saw him pick up a guitar. Then one day he grabbed someones right handed guitar flipped it upside down and started playing it left handed. Without restringing. Then he blew me away with his playing.