I've only been through on my touring bike, and we've never gone east out of town, since it goes to gravel at Catalpa to the east, and almost immediately goes to gravel to the north. Would be fun to explore on the KLR
215 is nice, but you really missed out if you didn't ride
103 to the south!
It's so great that honestly I'd go down it and then back up if I had to head out of Oark on 215 to get where I was going!