Yes and No!
Sheep indeed, especially given the wide-spaced rows and provision has been made to grow pasture and other palatable ground cover in between the rows. It would be strongly advised to wait until the Leptospermum have established a bit, maybe 2 years, or longer to avoid damage by trampling and ‘taste testing’. They indeed won’t be interested in grazing on them in the long-term after they have got over the curiosity factor and the individual plants have gathered some mass and are well over sheep-head height.
Goats are a total no-no! They eat anything but having said that it would be the last thing they would eat in the paddock, but that might be wishful thinking!.
Cattle are also off the agenda here mainly because of their sheer size and trampling ability. Calves could be OK once the plants have grown to say >2.0m or so but not recommended.