2. Are they covered underneath in some plastic?
3. If yes to 2, why? Does that mean they aren't breathable - by which I mean hotter
4. Any Brooks B17 Standard owners migrated - to which one?
Reasons for questions - I wish to keep riding my late wife's 1993 custom Longstaff frame, even though it's on the small side. The main difference though is the 1º different seat tube angle compared to my frames, I'm unable to get a Brooks far enough back on the Kalloy seatpost with 25mm layback.
The reason I like Brooks is I don't get a hot <moderated> - which every other padded/gel/plastic/whatever saddle is guaranteed to provide

