I don't see there being any prolem with the snaps.. if there were, he wouldn't be using them.
The snaps are the sameas the one that goes around the top part, very small, low profile, very secure when snapped. You wont have an issue keeping these snapped unless you practice karate in your sleep. Also, it cinches up pretty freakin' small. You could shove a T shirt or jacket or what not at the bottom and it would seal it up.
When unsnapping them though, I hold right next to them, they hold strong enough I feel like I'll damage the quilt if I pull willy nilly, almost like rolling the sides away fromeachother rather than pulling them apart
"I ain't here for a long time, I'm here for a good time"
- George Strait