Please keep us in the loop dave. I was wondering the same thing about what it does to the slime coat on the skimmer. I used to clean my skimmer neck like you did with scrubbing it down and using paper towels to really clean it, but then like you stated, it would take a few days for production to ramp back up. Now I just do what Barry does and rinse the crud off and throw it back on without wiping it down clean. This seems to let it start skimming insantly when I throw it back on the skimmer. I don't know how much of a difference it is in skimmate production, but I feel a skimmer skimming 85% all the time is better than one that takes 2 days to get going to 100% again.
Now if this neck cleaner keeps the production going 100% of the time and keeps the neck clean, win win in my book. Please let me know how it works for you, I would love to have one of these on my system if they work out well.