As far as "garrison dress" goes, the kilt is worn maybe three times a year at most in Highland regiments - never for work, always for dress parades. Rememberance Day and one or two regimental parades commemorating significant battles ie St. Julien's Day, Buron Day, Walcheren Causeway, D-Day, etc. each regiment has one or two they commemorate each year. Funerals and weddings my also call for wear of the kilt, but other than that, they are left in the closet.
When travelling and ordered to travel in uniform, its possible DEU will be the dress of the day - wearing a kilt on a plane sucks completely but otherwise, CADPAT is what any reservist will spend the majority of their life in, unless they get a callout (after they finish their first year or two of training) to something like a Canadian Forces Recruiting Centre where DEU is worn as dress of the day.
In short - much ado about nothing.
Incidentally, the kilt has not been battle clothing since it was banned as "unmilitary' in 1939, though some stalwarts of the 51st Highland Division went into action in 1940 in France wearing the kilt due to shortages of Battle Dress. The original plan to issue "Drawers, Highland, Anti-Gas" was seen as an unworkable solution to enhancing the piss poor poison gas resistance of the kilt and bare legs of a Highlander.
As for the "CADPAT kilt", I'd be interested in seeing that. I know some firms sell "action kilts" or whatever online, of denim with cargo pockets, but if it isn't wool and pleated in the back, sorry fellows, you're wearing a skirt, not a kilt.