finally skated on the Marsblade ice holders yesterday an i am very happy. a little background on myself, i have played hockey for almost 40 years thru Minor Pro and always used Tuuk + holders even on the newer skates, profiled to a forward stance. I have been using the roller frames, along with my kids, for about 2 years and i have been looking forward to putting some time on the ice holders since the kickstarter. i have them mounted on a pair of supreme 190s, swapped out the edge holder and sharpened at a 5/8. i did not have these profiled yet i wanted to know how they felt stock in the supremes, i prefer the cut of vapors with a forward profiling. first impression is that turns are very smooth and i don't feel like i dig into the ice as much. i could probably go to a 3/4 ROH and i usually go a long time between sharpening. i only slightly noticed the lack of profiling since there is so much movement in the balance point but i did get fatigue to my upper ankle i think due to the constant balance shift. i might look into adjust the movement in the holder as Per has suggested. i didn't notice the change in weight coming from the holders that were mounted (edge), they felt the same while skating and at 43 I'm not flying around the rink like i use. i liked the way these feel, maybe its my skating style but i think after i get these dialed in with the proper profile these will be my everyday skates. i have several pairs of skates all with my profile i will continue to compare these to.