Well...
I can only post empirically of my experience with him. I saw all three pieces listed and was shopping all three (Shock guard, tail, and heel). I also, as you, read the now locked post about the "R" rims he sold.
I was concerned and purchased the least expensive of the three, the DP CF Heel guards. The package got here, it was in the traditional Ducati bubble wrap, with proper part sticker, Ducati instructions in bag, with the two parts. they had proper serial numbers on the inside sticker and inlayed in the CF was the inspector number 11. They look factory legit. They had been installed as evidenced by the crushed rubber washer (it was stated when purchased), but in pristine condition. I have no problem with the part.
Tuesday I send payment for the CF rear tail. I will post my results, but expect no problems. Seemed fine to me.
The gentlemen even sent them USPS Priority for a quicker delivery.
Thats all I got.
NOLA