I've made center seams before but unless I'm going to a juried event where it would be required I like western hard sole better.
They offer a bit more protection from rocks and the like.
Here's a pair I made recently for myself because my old ones were about worn out, these aren't even broken in good yet.
The uppers are bison hide and the soles are double heavyweight latigo.
Lol which Pair? I'm working on the step by step guide now to the Moccasins from the write ups. Between this and making them for my talk at school of the Longhunter this past year I shouldnt need to make a new pair of mocs for a few years