[Elecraft] QRQ QSK - specs?

[bruce whitney via Elecraft]

Anyone know? - Does Elecraft offer any specifications for QSK performance?
Perhaps some sort of T/R turnaround time or a claim for some max. WPM with acceptible performance?
I've been in discusions with some friends that do QRQ QSK with K3's and the K3s - seems to be some slight disappointment.
No problem for me - But I have noticed that my Orion II seems better than my K3 (with the new Synth) in QSK...
Anything official on this?