I am open to the idea of a hybrid similar to what you have, Crankin, but definitely would want to be able to ride about the same speed as I do on my Madone. I'm already pretty slow, and wouldn't want long rides in terms of miles to take any longer in terms of hours than they do now.

If I put less knobby tires on my mountain bike (an old 26" hardtail), I can ride a couple of mph slower on pavement then I can on the road bike. And I slow down a lot going uphill, due to the bike's weight.