Nobody else jumped in on this so I will. I have a GB saddle and I've been riding it for a year. It's great. Felt good from the first mile.
I have several Ideale saddles for comparison, they are nice too once broken in, but they do sag after a while. After 40 years, what do you expect.
The nice thing about the Berthoud is that it won't sag. The leather is hella thick and very well supported on the plastic cantlepiece.
Sorry if this is off topic Dale but I think this is a part that qualifies as a KOF item.
Mark Petry
Bainbridge Island, WA 206 618 9642 <mailto:mark@petry.org> mark@petry.org