I am also interested in the cable shifter and was able to get a feel for it first hand. I'd seen and played with it at the POCA fun rally and was impressed, but it wasn't hooked up to a ZF there. Last month we were in Temecula and were able to stop by and visit with Scott in his shop and got to shift it in his car. He said they still had a few tweaks to do, but I thought it was fantastic as it was. The shifting was very light an precise and the throw was significantly (1/2?) shorter and the shifter was perfectly centered in the gate. On my car the shifter is maxed out (almost rubbing the gate) in R and 4th-5th.
I had a few concerns (about grit, dirt, and wear and also corrosion of bare aluminum) which I asked about in a followup email. Scott replied
"The reason the stock unit is enclosed in a case is because the pivot shaft must be heavily greased to function normally. It has a ball socket arrangement that must be clean and greased for a smooth operation.
Our design is maintenance free and does not require grease. There is nothing that will get gummed up with road grit with our design. There are only 2 moving parts. The rail direction movement has a ball bearing for the pivot. The cables are marine grade cables so they will be fine in the environment of the Pantera engine compartment. There is ZERO wear in the gear select direction of movement. Nothing to gum-up or get dirty that would affect functionality. There is nothing to have reservations about regarding the environment."
So now all we need to know is availability and price