I love the small puffer! It is an easy bag to wear and switch from shoulder to crossbody and fits a lot. I would try to avoid the rain though even with Carbon Pro--side note I don't like the Carbon Pro on the back leather because I felt a slight change in the feel of the bag after I did that but did not feel or see any difference when I sprayed my other puffers.Loewe Puzzle Mini in calfskin or Loulou Puffer Small in lambskin? Or the YSL Mini Lou camera bag?
The puzzle in the mini size is pretty small and the opening is tight so I feel like it's a little fussy to use. I would recommend the small puzzle instead. I would probably try to avoid the rain with this bag too but if you did it I would probably say avoid the satin calfskin if you don't like wrinkling.
I am not a huge fan of the mini lou camera bag--too small for me and I would want a removable tassel. But, it seems like it would be more hard wearing than the other bags when it comes to rain if it was in the grained leather not the smooth leather.