Thank you! I really don't want to get water spots lolI believe pebbled leather is already treated to be waterproof so I believe your bag should be fine. Smooth leather is more likely to get water spots. That said, it doesnt cost much to just pick up a waterproofing spray from the shoecare aisle and give it a good spray (I use Kiwi All-Protect). You'll be better protected against not just rain but also spills and food stains...