I disagree - because Immigration Canada is very specific in its interpretation of common-law as meaning living together in a marriage like relationship for a period of at least one year. They talk about periods of separation being permissible, but only if they are short. This couple is not in a position to live together at all - unless he gets a new LMO and can work in Calgary . . . and she has made the clear decision not to give up her business or her home to move to Jasper.
There is one exception: conjugal partner qualification when there is an immigration barrier, or fear of persecution that makes it impossible for a couple to live together or to marry.
Not only is there not an immigration barrier in this case - both are living in Canada but, because of financial considerations, choose not to live in the same city - there is no impediment to marriage.