Well, my sister called me to let me know that all went well with the flight test on the Seahorse case. No one questioned it and it fit easily into the overhead. So far, so good.
This case was quite a bit larger that both the Pelican and Storm cases. It is a bit lighter also. Yes, it will violate all airlines policies for weight when loaded with camera gear, but I have gotten good at making it look light as I heft it around. I simply tell the flight attendant that the hernia I just got did not come from hefting it into the overhead.
I will be putting pics on, as soon as I figure out how.
On several occasions, my box was gate checked, but it goes directly into the hold, with no time for pilferage. I would hate having a soft case thrown in there under my hard case.