I haven't. But if you're a by the numbers guy, you can apply about the same deduction as you see in the other mfgs guides.
I believe the lower ratings stem from stability analyses where the avg large "load" in a truck bed is concentrated pretty much to the confines of the bed with the vertical center of gravity somewhere within the truck bed, relatively low. Ie: a pallet of bricks.
A TC is going to put that cg several feet higher in the air and have greater dynamic forces affecting the truck's handling than a concentrated load.
Word of warning, and there's a hundred threads or more debating this issue.......if you're going to go completely by all the mfgs numbers and don't understand mechanics or just aren't willing to forgo limitations imposed on paper, for whatever reason they may be there, be prepared to buy a larger truck than you may think you need for a smaller camper than you think you want.