OK Richy I tried it but first let me explain I recently clayed , polished and put a sealant on a few weeks ago so it was already very slick and smooth to start with .
Also it was late in the day , the sun was shining but not directly above.
I used a brand new eraser and some spray wax and went over a small area with 4 light passes.
To my amazement it did not look marred at all . It did however take the sealant off or at least felt like it.
I am going to look at it again in better daylight and see if I see any marring i may have missed.
But this is probably not a good test because how many cars do you get that have already been clayed polished and have sealant on?
Thats my results so far

no visible damage .