Fyrstormer-I received mine in the mail today, along with the original driver, safe and sound. Thanks! Being me, the first thing I did after playing with it for a few minutes and comparing brightness levels against my other LS20 and several other lights, was to try the PD pak on the light. After about an hour of playing with it, I think you are selling the utility of this mod on the stock PD short.
For me, the PD works beautifully. I can toggle through the levels fine, and the modified GDUP has the ability for me to "Set and forget" the high level. That said, I can set the high level by pressing through the choices, and the driver remembers my last choice. So, I can set high to level one,("mizer") and whenever I hit the piston for high, there is my chosen level. I can also toggle through to high with the PD, ("turbo") and it remembers my choice. I pick up the light 5 minutes later, and "turbo" is still there as the high level choice. I personally feel there is a learned ability with the PD to choose just low, without engaging high, that everyone with Don's PD's learns, kind of a calibrated "McGizmo Thumb"...
I understand that you wanted to be clear and have everyone use the Clicky Pak to eliminate skipped levels, or not engaging unwanted output, and having to cycle back around to what they wanted, but who hasn't accidentally engaged high, or wanted to go from high to low on a stock PD and missed? There was, for me, a bit of a learning curve with the PD's when I got my first, and I think if you can run your own light comfortably with the PD in stock form, that this mod shouldn't present a problem. EG: If you can go from high to low and back consistently with your PD without releasing through low to off, you can handle this mod with a PD pak no problem. This is my humble opinion, and should be taken as such, but my Clicky pak is going back in the safe.
I now have a "Mizer" LS20 when wanted, and a "Turbo" when wanted, and a middle level damn close to stock, as well. Nicely done, and Thank You! If anyone is on the fence, and is near Rockland or Orange county, NY and wants to try this in person, shoot me a PM...