Most places where you're going to get onto a boat, a roller bag is only going to be useful for maybe 100 feet or so on a dock. And, you're most likely going to have to carry it a good distance to get it to where you can actually roll it (I know there are exceptions). Then, you have to muscle it onto the dive boat (or have the crew do it for you) and once it's on the boat it's most like just going to be in the way.
About the only other place a rolling bag would useful is in the airport. Even then, only long enough to get it to the check-in counter. And, if I'm going to check my dive gear (and I'd never do anything but carry on my regulator and camera), I certainly wouldn't want a mesh roller. That's like a candy store window for thieves.
My personal preference for travel is a military duffel bag which is easily lockable and you can't see through it. And, no one would suspect that someone would be carrying a bunch of expensive dive gear in a military duffel bag. It holds all of my dive gear (except my regulator and camera) plus my large mesh dive bag. And, it would hold my camera and regulator if I chose to carry them there. And, I carry way more stuff in my dive bag than I probably should. The other plus is that you can pick up a duffel bag at a military surplus store for as little as $20. Then, after arriving a your dive location you re-pack into your mesh bag. My large mesh dive bag has padded backpack type straps and I've never had any trouble getting to the boat or on the boat.
Just my two cents.