I assume the answer is, "Only with a Sharpie." We'll have to wait for the next installment, though, for the definitive answer.
the linked article wrote:
A few months back Kink purchased a sex doll from a RealDoll competitor -- as a stand-in prop to be used for shoots and BDSM scenarios, and just to see how much fun the filmmakers could have incorporating a realistic sex doll in their ****. **** that incorporates RealDolls is by no means a new concept, and sites like realdollthreeways.com are evidence of the genre's ongoing interest. Though, I'll admit, when searching for RealDoll **** on sites like YouPorn.com, it's near impossible to tell the difference between actual human **** starlets and artificial silicone sex dolls in the video preview thumbnails. Just sayin'.