I prefer pouring my 5 qt bottles sideways. It lets me "nestle" the bottom of the bottle down near the (inline 4) exhaust manifold and get the pour spout closer to the car's cam cover hole. Even if the initial pour has, say, 10 inches of drop, I can get the bottle closer, maybe 4-5 inches, after dispensing the first half quart.
This design looks like it could interfere with that slightly.