All summer clothing used in Italy by Canadian soldiers was of British/Indian manufacture, not Canadian, which would also make things easier from a logistic POV. The KD uniforms are also much nicer to wear in the summer for re-enactments, when the 'season' seems to be.
Repro British KD is reasonably easy to obtain. Brassards of various patterns for the insignia can be locally made up (I have done these on my own sewing machine) and unit insignia can even be quickly changed in order to augment other units for an event.
I suspect KD is also less expensive.