Is it bad for a leather garment to "fold" a part of it?

I have a leather vest that zips all the way up to the neck, and sometimes I like to tuck the "lapels" (it doesn't actually have lapels but I hope you know what I mean) inside to kind of make a v-neck vest. It's usually only like this for up to 12 hours at a time daily but I still worry something bad could result. Does anyone know?