@Danimal506 sorry for the late reply. We're now in the middle of the "cold" season here in Austin.
I was hoping to score a leather jacket in time for the "cold" season from a brand in Scotland (wink wink) but the skin they ordered for it hasnt arrived yet...
So I ride with a modified type III IH jacket (the one dyed in indigo) over a tshirt, a thin merino hoodie and a regular hoodie with a scarf to block out the drafts and it's very, very bearable.
I just arrived back home from a 50 mile ride and it was beautiful. Man I love Texas