Hey, momof 4, what's with the metric measurements ?

It sounds like you might not have a good saddle yet, but you probably already know more about them than the guys at your LBS!!

Any saddle will work on your hybrid. (quit worrying abuot what it looks like, it will LOOK fine)
The real question is; is that Selle going to feel good after 30 miles? 20? 10?

The cool things about the brooks is that they have been around for about 100 years. I think they have been proven with the test of time. And my tender underparts agrees.