I know several people who own the Ultra, and while they are all 'outdoorsy' sort of people, none of them are even close to 'extreme'.

The market more likely is people that see themselves as "extreme adventurers, mountaineers, extreme hikers, etc", despite mostly doing half day rides at the nearest mountain biking trail, national park hikes where they spend one night in a cabin, and a weekend snow boarding at a ski resort.

This is a bit silly. I was gifted an Ultra, and as a climber/skiier/trail runner, it serves my purposes extremely well. The maps using WorkOutdoors are far superior to what I've seen from Garmin devices (although I haven't tried) and I can always get all-day battery and charge within 30-40 min before bed. Yes, I wish the battery lasted longer but it's a tradeoff I'd always take for a more responsive and usable interface.

One gripe is that the functionality with gloves is a little annoying since you can get false positive screen taps from sleeves/cuffs. A second is that the main button is pressed when doing a pushup or in some situations while climbing, which triggers the emergency alarm mode by default (but is configurable to turn off).

Most adventures are not many days long without sleeping (for me) and this watch works pretty well.

I know the Ultra has an extra button, but I wonder if you can start a run on it in the rain (ie without using touch). That was what finally pushed me away from Apple Watch, and the marketing of the Ultra is quite funny if it doesn't solve it.

Garmin makes solar powered watches for adventures types in the back country. The Ultra is probably good for scuba diving since you aren’t doing it for so long.