Skied a day of boiler plate yesterday at Loon Mtn, New Hampshire. Was really excited because I had a pair of demo Kastle RX12's and my brand spanking new pair of Ullr's Chariots. The chariots were 178 cm and Kastles were 176 cm. I am 6'4" and about 250 lbs (a big guy) and an expert skier.
Well, the front side carvers (Kastle's, 70mm under foot) struggled to hold an edge and the twin tip Chariots (101mm under foot) felt like I had hockey skates on. The Chariots were so sharp that they wouldn't drift on the boiler plate, just full on carve or do a grip slip dance if I backed off the edge angle. I did not have a stone to dull the Chariots tips and tails which would have cured that issue, so one run and I was done with them for the day. They carved a mean turn on pure ice and I can see why they were described as "raceable" on Real Skiers site. I look forward to de-tuning them a bit and spending a full day on them (hopefully on better snow, too). I did notice the increased boot force due to the wide width when you roll them on edge to carve.
The front side carver Kastle's really surprised me with their lack of grip. What grip they had was very predictable and consistant, though. I was told they were tuned well by the shop, but I doubt it. When I could find a little snow on the side of the trial, the ski was night and day different, in a good way. I will hold off any negative comments till I can talk to the shop about their tune state. The day was all about edges and grip and was really hard to evaluate a skis true performance. Best thing I can say is by the end of the day they felt a lot like my older straight slalom racing skis, but shorter, which is a compliment. In what little soft snow there was, they really came alive and performed.