From what I have run into this year, a majority of those being hired actually live on the mainland. Most that I talk to did have some sort of Hawaii connection, used to work for Aloha, or had family here/used to live here. And a large amount of Captains I fly with do in fact commute. Enough so that I don't always assume they live in Hawaii...
Hawaiian does offer unique career opportunities that no other mainline carrier offers. Primarily widebody international off the bat. And what seems to be a shorter upgrade than most.. (not gonna hold my breathe on that of course as things change on a dime). Also, if need be, a way to be home every night doing interisland..
Our trips are generally 3 day, some 4 and occasional 5 day trips.. I do primarily 3 day trips which seems like a walk in the park. I get home and feel like I was barely gone at all.
Hawaiian may be a very small major carrier, but it offers a very unique QOL. Moving to Hawaii can be difficult, some adapt and some don't.. My family and I adapted very well even before Hawaiian called. It took about 6 months of adjusting to being away from family/friends, but once we started making new friends, assimilating into the neighborhood it really became home tom me..