I only flew the T67A, but thought that it had a truly woeful roll rate. Generally the control harmony wasn't bad at all and it was OK for teaching stall/spin awareness and prevention. But I tried my Bulldog aeros sequence and gave up after the first half Cuban. Like the Chipmunk, watching prop rpm during aeros was essential; at least military versions had a constant speed prop.
As for Firefly displays, the one I saw at Farnborough involved mostly looping manoeuvres, but the abysmal roll rate meant that anything involving a roll used a flick entry....
Those who instructed on Das Teutor told me that it had an even worse roll rate than the Firefly. Its saving grace was that it had a better climb rate than the Bulldog, I understand.
During 1970, our UAS CFI went to fly various possible Chipmunk replacements. These were the Bulldog prototype, some Zlin, the SF 260 and a Pitts S-2. Beagle went bust, politics intervened and the Bulldog it was. Of which the RAF ordered 130....