Does Loewe sold separate leather straps? I have been using my Fendi straps for my Loewe puzzle bags. They are leather, wide, and substantial so they are very comfortable to carry heavier bags with. But they are too short for carrying the bags messenger style. I looked through the Loewe website but can not find many. Most are thin, with some laced in a decorative style which made me wonder if they are going to be comfortable against our shoulder. Will the boutique have more options? Thanks in advance!