I have the Cortech GX Air that has served me very well. It is mesh with leather on the shoulders, elbows, and back. It has two removable liners - one is a waterproof liner that also helps on cool mornings, and the second is a full insulated liner - not just a vest. It is has kept me warm down into the 30's, and since it's mesh, it's comfortable enough for the humid summers in GA. I can't imagine wearing a full leather jacket here in the summer. If you like Alpinestars, you should see if they have something similar.
"We didn't trade shoves; I did all the shoving." -Bobby Knight, 1981