Reasonable. I'm no pro, still I always have pack of single-use medical gloves at home. Any place that sells medical stuff can sell you a pair. I always go for whole pack and let family to take whenever they need them too. Worth investing into. A corpse shouldn't be touched bare hand. I would take them on sick creatures too, even humans. Heh, my medical school remains with me. Lol.
Yeah, people see it different if it is animal grown and killed by humans. We have those farms here too. if I bought or collected chicken bones and sold them further, it would be no problem as long as it would be hygienically safe. Same with mice, rats and maybe even pigeons. Pests are not protected. I met with genuine business selling bones and jewelry made out of animal bones. Mostly mice and rabbits. I bought from them a python snake vertebrae bracelet. A little bit grey stuff, but again animal that was born and died in human care. Only regretting not getting purchase papers, that would protect me if anything.
Moisture is not on itself the main issue, but the mold is serious problem over time. It is unhealthy for humans to live in place with mold, it's toxic stuff. Leather is dried skin. So when it gets wet, it can continue it's natural process of decomposing. Leather really needs care... just like my swords, if I didn't oil my sword, it would start to rust... (not really, it's stainless, but habit is good to have)