I dunno
@Crackle
Some saddles are, quite literally, a PITA as soon as you sit on the things. IMHO the right saddle should feel comfortable right from the off.
I recently bought a bike from a fellow CycleChatter, and the saddle she had on the bike hurt as soon as I put my bum on it. Oddly enough, the saddle I really like, she says it's the worst one she's ever tried. The OEM saddle for my road bike is the wrong shape and too narrow for my bottom. While it's just about bearable for a mile or two, much beyond that I feel like I'm sat on a knife...
Not sure any amount of riding on the original saddle that came with my road bike or the one that was fitted to the hybrid would make my bum adapt to them.