Thanks for the replies!
I never realized that it's possible to put the original clasp on the leather band. That is definitely a plus, especially now that the OF Daytona comes equipped with the Glidelock system.
More importantly, the Daytona looks AWESOME on leather! I'm actually surprised that more people don't opt for this set-up. I did, though, find out yesterday that Paul Newman liked to wear his Daytona on a black leather strap; one can find photos on the Internet.
I haven't ever tried on a watch with an OF band, so I don't have an opinion about the wearablity, but it's good to see that there are other options.