The link you provided doesn't work for me, but I know which bag on the MK site you are referring to. Do you know if the shoulder strap is the same width as the one on the n/s Hamilton tote? You mentioned that you have several Hamilton totes, so I was just wondering if you compared the shoulder straps. Thanks for all this info.
Not sure it helps, but the strap on my EW European version Hamilton is not as wide as on my NS Hamilton. It's a bit wider than the Selma strap though.