I would echo the positive comments above.
- feels good right out of the box
- feels same at the end of a century as it does at the beginning

The fit, feel and adjustment are all somewhat different than a Brooks; so don't think of it as a Brooks with a slot in it. Even tightening the leather is different (with a Brooks you don't tighten it very much: with an SA you might turn the bolt several entire revolutions to get it right).

Also, be advised that the seat rails are different from a Brooks. I was using a Carradice Bagman quick release bag hoop with my Brooks saddle but when I switched to a Selle I found it wouldn't work. So if you're attached to a particular seat bag or other device, be aware that you might have compatibility issues.