So the Bowfin looks great but how much crap builds up between the support member and roof structure?
Seems like a trap to me.
That being said, where I'm at, I've got pine needles and maple blossoms that fall like rain and make compost anywhere they can settle. Others may not have the same problem.
Leaves, pine needles, small twigs may accumulate along the side support and roof but this material can be swept out, washed out, or blasted out with air. The positives of the Bowfin greatly outweigh this minor issue.