I read the entirety of your review on Blister. And I think that reviewing a ski after only four days is a bit premature.
Many skis have, for lack of a better term, a break in period of a day or two. After that, their performance stays relatively the same until the core deadens, the flex becomes weaker or softer, and the ski just isn't fun to ride anymore. Hop on a pair of older Scratch BCs that have seen 200+ days and you'll know exactly what I just described.
I've skied every generation of ON3Ps: fat, park, charging, everything. The break in period on my pair of park skis this year took six days before the flex mellowed out. A pair of Viciks I began riding last summer took about the same time to hit their stride.
My guess is that it has something to do with the layup. ON3P is the only company on the market making full bamboo cores (Liberty, DPS, Salomon, etc are only using partial amounts), and thus it's fair to expect the skis to behave differently than I mentioned above. From what I've seen, they take longer to break in (around six days or so, sometimes faster), but this is returned in that their positive characteristics last longer. My 2008 Wrens, which were the fourth or fifth pair to come out of our original press, are still as lively as they were on the 10th, 20th, and 100th day that I skied them. They've been hauled up mountains, bent in a bare rock chute (slight reverse camber on both skis resulted; a wood core ski would have snapped), left on 8000 ft passes for two months, and still ski like they did after those first few days.
I give you kudos on not trying to determine the durability after a four day review. It's professionally written, intelligent, and worthwhile. However, I'd like to hear a report from day ten of using them, as well as day forty. ON3Ps age quite well, and I think you'd be impressed with the results. Let us know.