Note
About 150 km on skin skis, moderately easy skiing on average about 4 min/km pace or slightly over. Skis have been great. Glide has been really good. Skin does not touch ground on downhills so skis glide downhills on rails at least as as well as my best skate skis, same when double poling. No problems skiing outside rails or changing lanes, I can even sort of skate with some steps if needed, so skis are stiff enough to make skin not brake too much. On soft snow I can feel and hear skin slowing down glide a little, but not enough to make it annoying or make it difficult to keep balance. Grip has not been 100% and I need to focus on putting all weight on the ski when I kick and on really icy conditions I have to ski outside rails to get enough grip. Softer ski would provide more grip and make skiing easier but the trade off would be worse glide and making lane changes difficult for skis stopping entirely instead of gliding. With my knees I prefer not to face plant. I believe every time I would have been able to wax slightly better waxable skis, but not much really. And in practice these has been better than my average waxable skis I used to use before because I hardly never bothered to use enough time for waxing to actually make them better than these skin skis.
But I can see for some folks these skin skis may not be that good. If skiing technique is lacking or there is no fitness to jump full weight on skis all the time, this stiff skis would not provide enough grip and skis would have to be softer, and then glide and other aspects would be worse and skiing less enjoyable and waxable skis or even oprigrip/nanogrip skis might feel a lot better choice.