Hey Longchamp fans, Recently, I bought a Le Pliage (Large) for school. I love it because it's so spacious. I can fit two textbooks there! But that's what I'm afraid of. The handles seem to just be sewn on and I don't know if they're made for carrying so much weight. Anyone else have a Longchamp and carry heavy things? Is it okay? Does it pull at the handles? Thanks!!