One word about the Porter Case as a carry-on. It's true that it will be over the line for some planes, but then again, so will pretty much any carry-on. The biggest risk with putting anything fragile (like housings and ports) in a soft-sided carry-on, is that you may be made to gate check it. If you use a soft-sided carry-on, be prepared to remove anything fragile like your housing. With a Porter Case, you can just check it in, since the Porter offers some structural rigidity.
Like tdpriest says, if you're flying from the USA, the rules are more liberal. You really have to check the rules for your particular airline to see what your limit will be. We try to fly on carriers where I have some status, so the luggage usually works out with no extra charges. But once you start flying in regional airlines in Europe or Asia, luggage limits get a lot stricter, so you should have a contingency plan. In the Philippines, the airlines get pretty strict about luggage and we usually get dinged for a little extra, but that's just part of the price of the trip. We are usually over the carry-on limit as well, so that means some arguing with the ticketing and/or gate agents. I often end up showing them my carry-on stuff. Put a pair of 5dMK3 bodies, a 8-15mm, 16-35mm, and 100mm macro plus chargers and batteries in a light Domke bag and you'll be overweight. A macbook pro with backup drives, your dive computer, Nautilus and regulator in your backpack are over the limit. So you argue with the agents. "How do you expect me to check in this stuff? This regulator costs $1800. This is $10k worth of camera gear, $6k of computer gear, etc., etc. Do you really expect me to check any of this stuff in? And when it goes missing, who will be responsible for it? You? What is your manager's name? I want to make sure I know who will be responsible." Eventually, they always relent and just wave you through. Sad, but that is the game nowadays.
- DivingMeCrazy likes this