Here's a Little Help...
One place is CycleGear (chain) on Cobb Parkway. You can get the address from cyclegear.com. I bought some stuff there, but not leathers. They carry Frank Thomas, Dianese, Icon, Alpinestars, and i'm sure some others.
Sorry I can't be of more help. (I order most of my stuff online).
Definitely do some searches or ask over on georgiasportbike.com bunch of great people, and good advice.