When I received my Café Bags (small, medium, and large), I didn't immediately notice that all three came with different strap arrangements. But when I started using them, the differences became apparent.
On my Small Café Bag, the strap is a thick strap, and the shoulder pad is a very thick pad in the style of the Imago shoulder pad. Like the new-style Imagos, the excess strap goes down the sides of the bag, so there is no slider thing in the middle of the strap.
On the Medium Café Bag, the strap is the same thick strap, but the shoulder pad is one of those short plastic? rubber? things with the pokey nubby things on the underside. This one has the slider thing in the middle, so the excess strap is just doubled under.
On the Large Café Bag, the strap is a thinner strap, and the shoulder pad is the same as on the Imago. Slider in the middle, and excess strap is doubled under as in the Medium. (Like the old-style Imagos.)
Straps. The straps themselves are pretty good, although it was odd to see such a thick strap on the Small and a thin one on the Large.
Sliders. I do not like the sliders being in the middle of the bag. It especially gets in the way of the shoulder pad. At the same time, too much excess strap going down the side of the bag is kind of funny looking. Verdict? I'd go for comfort and funny floppy bunny ears.
Shoulder pads. The thick one on the Small is kinda overkill. The pokey one on the Medium is kinda pokey and gets lost easily.
I think I may have gotten the bags at a time of much transition, but I thought I'd share my thoughts. Also, I have no idea how the straps on everyone else's Café Bags are set up, and would like to know. The product pages don't really say which strap/slider/shoulder pad combo you're gonna get, too.