It WAS Mike's 1st TT, (1958)and he had TWO circuits to learn. And he finished all four races, and got four replicas. Some achievement. The reason that the Clypse circuit was discontinued was as follows.
Firstly, the riders did not feel that they had ridden a real TT course. Secondly, the organisation was stretched to the limit in using two circuits, (don't forget they had needed marshals for the Clubmans races and that took the TT to a third week in the final Clubmans year, 1956), and finally, the feeling was the circuit didn't really fit in with the the image they wanted for the TT.
Plus ca change!! As was discussed a few months ago on this very website, these factors are still relevant today.
Forgot to say that Mike is retiring from a practise session in the photo, hence the smiles.