Ya same here, I havent seen it served any other way(restaurants or in peoples homes). I truly believe its the preferred method because it helps take the chewiness out of the cut, similar to how they slice philly cheese steak(thin and against the grain) to make it less chewy. Also, in the restaurants ive been to they serve it with a pair of scissors so you can cut them down further like this:
This way each individual piece has a little bone handle.
With all that said, ill reiterate, Ill take a double order of your ribs to go! They looks delicious!