If it is Dalton to whom you refer to as CAS then you're a bit behind the times as he hasn't been CAS (or in the RAF) since 31 July 2013.
I'm indebted to you, Wrathmonk, especially since on mature reflection I do indeed recall the interest in Air Chief Marshal Pulford's rotary wing background on the announcement of his elevation to CAS.
However (with apologies to FL for thread drift), I am now further intrigued by the fact that Air Chief Marshal Dalton is wearing an aiguillette despite no longer being either Air Aide-de-Camp to HM The Queen or a member of the Air Force Board. I am aware that a former Air Aide-de-Camp is permitted to continue to wear the Royal Cypher itself but, by comparison with the Chaplain-in-Chief's Royal aiguillette as a QHC, I suspect that it is the Type 4 aiguillette which is still being worn.
If only Ben Bathurst had worn uniform perhaps we could have had a straight comparison!
Jack