I think there's nothing wrong with having 2 selma messengers (as Norwegian Girl and I can attest to haha) especially if you love the style. I think it would depend on what you plan to use it for. If you don't like the way the jet set travel crossbody looks on, then it would definitely be your preference. I wouldn't get a different bag just because I needed a different style, but again that's just me! Get the one that you will get the most use out of and that you will loveee!
Btw I was using my peanut medium messenger yesterday and I put my wallet, coin purse, phone, keys, and a water bottle in it. Everything fit perfectly with some room to spare but I was wondering if anyone else is scared to load up this bag? I have seen a few on ebay that have the parts where the straps connect become damaged, it seems from carrying too much. I am worried since I don't want that to happen. Should I avoid overpacking this style?