They made a big deal about it when Amy and Maya won season 25. In fact, the only one they didn't make a big deal about was Kisha and Jen, and I wonder how much of that is because season 17 hadn't finished airing before they left so they couldn't say "We'll be the second F/F team to win."
I don't remember that in 25, maybe I just didn't notice because they were so middle-of-the-road throughout the entire season that I didn't think there was any way they were gonna win so I just wrote them off. Speaking of which I DO remember they made a big deal about them being one of the few teams to ever win the race without winning a leg before the finals. Third team to do that, I think. ---