Went for a jaunt into the canyon today after finding some good ice at Bienn Udlaidh on Monday and the very cold forecast for Tuesday night. Can confirm that ice at udlaidh does not mean ice in Eilde canyon! Maybe using Sickle and other lower tier routes at Udlaidh as a barometer for potential ice in Eilde may be ok, but the upper tier at udlaidh forms much more rapidly.
Secondly, the canyon is NOT sheltered from the wind! it was an absolute wind tunnel today with spindrift akin to the Ben!