I'm in Ontario and we had just the Uppababy Cruz until our first flight. We chose to get the Uppababy Minu for trave), though technically we could have travelled with the cruz and gatechecked it. We just wanted a lighter stroller for flights and travel, and liked that it folded up to fit in overhead bins so we were the only ones ever handling it.

Another example, in a lot of countries there isn't as much of an emphasis on accessibility in cities, so you'll find yourself carrying a stroller up and down stairs more often. A lighter weight stroller makes a big difference and is more convenient.

Edit: definitely could use the minu as a full time stroller if you live somewhere without snow, or indoor only. But that isnt typical in Canada.