I have around 15k dives under my belt and taught full time for 15 years
Its very cool and will sell
but nothing my Citizen watches did not do 20+ yrs ago (for basic info) or Suunto dive devices did as full blown computers but they were/are more specific use items BUT those did nothing for other things like working out or biking or hiking or daily life setting a timer etc...

this is where the watch is so cool its just a daily piece !
I can see the integration of it being very cool they will bring it more to mainstream SINCE you do not have to buy a dive specific device which are $$$
also IMHO for safety its now a backup you have and when I did tech diving you want backups and redundancy !
just like the Sat emergency communication on the new iphone are going to take a HUGE chunk out of the garmin in reach or other devices sales I think !
I can see it taking a cut out of some of the dedicated dive devices
bottom line yeah this is super cool and so wish I had one at the height of my dive career ! Not that it would be a game changer just that daily life integration they offer and redundancy for even a pro to take advantage of etc.