Lovely bag but with the few things that you mentioned...no buckle on the belt (this would also worry me if I was carrying the heavy phone in the bag) and the leather being more prone to scratching, I would be curious to hear how it holds up in a couple of months.
I'll definitely do a follow up! I've carried my phone through this last trip I had and it was fine, but I'm also hoping it won't distort its shape!!! xx