Over the decades, I've given away at least 30 saddles, saddles I've bought and ridden for months, but then found something I didn't like about them. The best saddle for someone is probably something that the rider should pursue on their own. Probably 5 different shapes and sizes would be enough for a fitter to be able to get the rider in their most effective position on the bike. Some people can just ride whatever comes on the bike and be fine. Others, like me, need exactly the right thing in terms of size and shape. My usual saddle test has been to ride a century on a saddle. Even that is not enough, really. Over many saddle hours, things appear that are invisible in even one century ride. For sure, there's no way to know if a saddle might be the right thing until after the third hour. Obviously, that's not happening during a bike fit. Just getting close in terms of profile and plan view shape is about all one can do in an hour and even that is problematic.

A typical bike shop approach is to offer a wide variety of saddle sizes and shapes and allow the rider to test ride them, but only after paying a substantial deposit and agreeing to buy a saddle when the testing is done.