There is more detail in the rubber strap with the vents, but the thing I like most about it is the width where it meets the case, it just looks so right from the side. After seeing the rubber, all the other straps just look too skinny side on where they meet the case for such a chunky watch. I am sure RM could build up a leather strap with some sort of tapered block in it, ie bulked it up where it met the case & tapered it down to the buckle in the same way. I much prefer the 'classiness' of leather, like I say RM just needs to design one that suits the case size better.