If I purchase skis with this Phantom treatment on it, what are the things I shouldn't do. Do I need to tell the the shop I have this treatment when I ask them to tune my skis? I've read some people wax over this treatment and it doesn't bother it. One more question, are there any disadvantages to purchasing new skis with this Phantom wax treatment? Thanks
Edit: Almost forgot, what if the skis that are treated with Phantom get a good core shot and need repair?
The answer to the first question is"nothing". I had 3 pair of skis DPSed last November and skied 3-4 half days per week all season and did nothing to the bases.
The biggest disadvantage to DPS is the additional cost that it adds to the purchase price of a ski. The only way DPS works financially is if you compare it to paying a shop to wax your skis every 3-4 days. The target market for DPS Phantom waxless treatment is someone who has no place to wax a ski and/or does not want to wax skis.
As far as what to tell a shop who is tuning your skis, I would decline if waxing is extra (likely would be) or accept the waxing if it is really wet snow and you want condition specific waxing or you want to go racing.
Ski repair: Ptex doesn't accept wax so the net effect of using it for minor repairs is the same with DPS or without. Metalgrip is mostly used to repair core shots and damage beside a metal edge where ptex won't stick. I am not sure if it accepts wax or not, and of course it will be a spot on the ski that does not have the DPS treatment but it would take a high level racer or instructor to notice any difference in glide in a metalgrip or ptex repaired ski, I would guess.