Comments about Stahlsac Stahlsac Curacao Clipper bag:
This is my first real piece of "dive" luggage, bought in anticipation of an upcoming international trip. I compared this to the Stahlsac "Jamaican Smugger" and decided that I wanted the separate compartments since this will be my only luggage on this trip. So far I've only done a test-packing of gear, and it looks mostly good. Currently it's got a non-tropical set (stainless backplate, wing, 5mm XXL jumpsuit), fins, weight harness, and some accessories and I would say it's "mostly" full in the bottom gear compartment. With all of that, I have 9lbs left before I hit the magic 50lbs cutoff.
Which brings up one of the best features - this is LIGHT. It's amazing how they managed to combine sturdy (by feel, haven't flown yet) with lightness. It's nice that Stahlsac has finally caught up with the other mfgrs who went lightweight once the airlines cracked down on baggage.
I was sort of hoping to be able to fit a 2nd BCD into it (for my wife) but that doesn't look likely. I should have enough room for my clothes in the smaller top compartment as long as I stick to lighter warm-weather clothes. Since I don't yet know how well the compartments isolate moisture, I'm probably going to back dry clothes in plastic "just in case".
The top and bottom handles are a nice touch for wrangling the loaded bag around without stressing the fabric. The two ample cinch straps seem to do a nice job of pulling everything into a nice compact package. I don't know if I'm going to claiming it's carry-on, mostly due to length.