Did you have the micro spikes or the kahtoola crampons? As you say, conditions are pristine for mountaineering but really call for crampons and therefore slower movement. I look forward to hearing the full account. I'm just back from a fairly epic traverse from ben cruachan to the kingshouse. Did it that same evening. was very string gusty wind sat morning and snowed most of the night. my map blew away at 2.30 in the morning in the middle of a blizzard on top of Glas bheinn Mor with another 20 miles to go. Will tell the rest of the tale later.