It seems like a lot of people advise against a checked Storm or Pelican case but I'm curious how many have actually had thefts as a result of this approach. I've used a backpack to transport my rig as a carry on but these days I've been traveling with family and kids and it has been much easier to just check my housing in a storm case. In the past couple of years I've done this on multiple trips to Hawaii as well as Eleuthera and GrandCayman. I've had no problems checking my underwater gear. Am I really just tempting fate?
Try a trip to Africa some time. In SA, I'd give it about a 25% chance of getting your check-in rummaged just for having international stickers on it.
You'd consider yourself unlucky to lose your gear to theft on the way to Hawaii, but travelling like that to poorer nations, especially the more corrupt ones, is an invitation to get rumbled. It's all about where your're going.