The cue is the same as the preview though and so you'd then have to alter all the cues and all existing shows designed on those cues would then be the wrong way around also.
That's why I thought simply reversing the beam cue zoning outputs was the simplest solution assuming Bill decides he wants to fix this as that then leaves both wall graphics and beams the right away around straight from the box, with only the invert X on the graphics zone being necessary for projecting to scrims when doing a combined beam / scrim show. Maybe a "reverse graphics for scrim" button in the workspace could simply that.
I guess the beam reversal is just one of things that no-one's every noticed and neither did I until I had the problem with a reversed Y scanner in the laser and so started to look carefully at the X Y outputs.
I don't have any other software, but wouldn't be surprised if all software brands were projecting reversed beams as otherwise it would have been noticed by now that Pangolin was different to the others.