I have been going through a phantom disappointment phase. I am going to change to waxing my skis on top of the phantom treatment. I hear that the phantom treatment may cause the wax to last longer in some way, so perhaps less often will I need a wax..but phantom alone, as advertised, has been extremely disappointing to me. On certain snow it does ok, but in other snow it does absolutely terrible. Particularly alta powder conditions have been awful. When I say awful, I mean really awful. Can barely hike or skate on a flat even, buddies that I know are 10 turns behind me and slower skiers will easily catch and pass me on flats, but even my turns are less satisfactory it always feels like I'm skiing on sand, some sand worse then other sand.
What I notice is when the snow is not as cold, then when starting a run they will be a bit sluggish but as I slide, they heat up and go a bit faster...even gliding quite well occasionally on certain snow, but each run when I start out, they are sluggish at first. I think there is something about them needing to heat up in order to glide. On firmer snow they heat up faster. On powder and soft conditions, they don't heat up, they suck. I am going to be trying wax on top soon and hopefully you're tip above will pan out...