It has to be I think 10" off the wall or something for the guard to have room to fold out of the way. The current location works very well since it's the longest run in my shop. I've needed to process boards 12' long before and wouldn't have been able to do that if it were against a wall. Would be close... perhaps I could... but not ideal.
The original layout had the tablesaw where the Mustang is now, but I moved it to the other side of the shop so I could get my wife's car in incase of hail. I plan on selling the TS and using that spot for the Mustang perhaps... or a giant Shaker style workbench.