I've got a gen Oris artelier skeleotn watch with the stainless steel strap. I wanted to get the leather deployment strap but can only find one for a ridiculous price.
I'd settle for a rep.
I don't wear the watch that often, and therefore I'm not keen to go for the gen strap due to the cost. Also, they are difficult to get hold of over here for some reason.
Ultimately its just about having the option - if a gen strap is $150 and a rep $40 then its worth considering. If the difference is only a small amount I'll just seek out a gen.