For all its faults (If you have an hour spare I can list them) the Covenanter was a pretty good training tank. It was dirt cheap to make, It was available I mean no one was going to suddenly load them all up and send them off to the Desert or Burma, it was fairly simple to operate but complex enough for it to be a valuable training tool and the crews could fix most problems with a hammer and some adjustable wrenches. It was also surprisingly reliable the Meadows engine needed a good amount of nursing but apart from that there wasnt a lot to go wrong.
As a battle implement it was crap but as a training tool it was fine.