Well they do make the single layer spartan if thinner and cheap floats your boat. I have done the crossbreed and found it to be a second class holster.
I guess if you want low cost then Old Faithfull is the buy.
And if the op thinks he wants a all leather holster than than thickness is not an issue.
http://www.comp-tac.com/product_info...roducts_id=102