Actually they did. The second Lipsey's run was expanded and included the 26/27, 20, and 34/35 guns.
ETA: OP try Cabela's. The crappy part is you have to call each store to check stock. But they had a bunch of the FDE Glocks. When I called the store outside Dallas and had them send my FFL a FDE G21 they said they had stacks of them.
Also, with the Gen 4 models, you can tell if they were in the second run because those have 4 backstraps and 2 of those have the beavertail.