Isn't that a bit too high performance for the 'needs' of training cadets to solo standard?
Reminds me of the late 1960s proposal to replace the Cadet Mk 3 with T53s, which would have a fixed stop to lock the airbrakes pertly open. Apparently seriously considered before Slingsbys had a fire which damaged the T53 jigs, leaving only 2 or 3 partly complete airframes.