A little more information which changes things a bit. Toe pedals with hydraulic brakes? Even a Terrier can be put on its nose with the braking force these can generate.
As a training aircraft the Terrier has plenty of potential surprises without the additional one of setting it on its nose, so I very much agree with S-works. If you can get someone to fly a Terrier reasonably well it is unlikely they would not be able to cope with heel brakes. Yes, in today's world they are different and somewhat archaic, but you do not see many of these sort of aircraft on their noses!
My Terrier with mechanical heel brakes could lift the tail and spin around on the stopped wheel. The elevator is powerful enough to lift the tail very high under power. Best of luck!