Peter Watson has seen your interesting comment. He believes the barracks you spotted was the former von Lettoe Vorbeck Kaserne (recently renamed). He has been in contact with the Montreal based Royal Canadian Hussars but unfortunately they have no relevant information in their Regimental archives (there is also nothing in the Regimental History "Bash On"). A possible explanation for this lack of information is that although the 2nd / 7th Reconnaissance Regiment retained the title 17th DYRCH throughout the CAOF era, the majority of the unit were probably volunteers or low-number soldiers from other Canadian Armoured Corps Regiments and not the wartime members of the DYRCH. He is pretty certain however that the 2nd / 7th Recce used the barracks you saw during their time in Leer.
Thanks for getting in touch with the Leer Archives. It was very gracious of you.
Peter and I continue to research this area and time of Canadian Army history. Anything that anyone can add is greatly appreciated.