I think you are going to contact them or have a dealer contact them. I have seen a lot of I-35s and none of them have had binding on the f-hole. Also note, the f-holes are cut AFTER the guitar is finished with a laser cutter. It gives if a very clean look. They would have to cut the f-hole first, bind it and then finish it.
Collings is doing more custom work these days and they do bind their 17" archtop guitars - so they maybe able to do an I-35.