Of all the cast, Travis would be the one most likely to be able to identify who'd worn an article of clothing by scent. Or, Travis loves the smell of his friends sweaty and well-fucked.

+ Top/dom Travis
+ Eating his own cum out his partner's hole(s)
+ overstim for partners

you don't have to actually write Travis fucking every individual cast member, so long as the implication that he's fucked the lot of them is there. if you want to focus on a specific individual, I'd prefer Ashley or Sam.