We just went down to a one car household as of a few weeks ago, so the timing of this is nice. However it looks like as a mobile experience the app may not be the best (at least on IOS), the reviews just hammer it. May not be a smooth interface like Car2Go was. Hopefully lots of questions for Calgary get answered at the announcement. Home zone? Parking situation? One way trips versus other rental options.
Edit: Their Alberta page is now making mention of Calgary:
https://alberta.communauto.com/ FLEX vehicles only for Calgary as of right now (so like Car2Go).
Here is the Calgary home zone: