Heard during a recent PI sortie on the east coast, our friends have asked for FL410 for a transit back to Warton, but once level are in potential confliction with an airliner climbing (but still 25nm away).
WC: "Monkey, one stranger blah blah, any chance you can make FL430?"
Monkey 1 "Climbing FL 430".
Twenty seconds later, they are level FL430. Somewhat different to the mighty F3, though it will be interesting to see how they perform dirty (with missiles etc).
BA