Propane torch head with pipe at right angle vs. 45 degree angle.

Somewhere I got a used propane torch head where the output pipe is at
right angles to the bottle. I always sort of thought it was for MAPP
gas, but when I just googled and google imaged, that didn't seem to be
the case at all.

Is there a purpose or advantage to the right angle one, or was it just
one maker trying to set itself apart from the others, or ???