Maybe this is an age thing with all the people so against packs. I have a small black one with the Disney icon heads all over it. I usually start off strapping it around my waist (but not tight), but if my back hurts later in the day, I just wear it over one shoulder and rest my arm inside the strap. This really works great. A backpack is always so cumbersome when you are riding the roller coasters or wet rides. And my son is now 14 so I carry only the necessities.
Like you, I also have a small black leather Mickey pack and I use mine the same way, sometimes around my waist and sometimes on my shoulder. I totally do not understand what some people have against packs? I guess I was not aware that I was under scrutiny of the fashion police when I am at WDW. I see no reason to wear Prada to WDW. I never notice what other people use to carry their junk around and assumed no one was watching me either? I just like being hands free all day. A back back would be way too big, and a shoulder bag would get annoying after a while too. I will say that I have never traveled there with kids, and my next trip will be with my 2 kids so I will most likely have to use something larger to carry all the extras. I know, I will use my husband to carry all the extras and I guess he can worry about what kind of bag he wants to haul around all day. :drevil: