Here's a link to Hike2 (the 735 and va-hr have more memory for CIQ than the 23x and 630 so there's a second version)
https://apps.garmin.com/en-US/apps/116a5b59-29ae-4397-a70e-907d7e5f8e44
It would be nice to have the app make 'Walking' (or Hiking or Kayaking or whatever) appear as an activity without having to go through the IQ Apps menu and then scrolling to it. I would also be nice if the app could create a dedicated widget that would quickly give you the specs of your last walk. But I presume that these ideas are not workable options within the parameters of Garmin's operating system.
How is it more flexible than Suunto? With Suunto you can CHOOSE which sport modes are on your watch. For example, on the Ambit series you can put up to 10 sport modes on your watch of your choosing from a huge list available in Movescount. Takes 2 seconds to open up the IOS app, and pick/choose. You can name them whatever you want and have them identify as whatever sport you want.