I spent a weekend on Catalina Island in So. California. I took all my dive gear in the DiveCaddy. I took a 7mm ScubaPro Steamer, hood, hard sole boots, gloves, a rash guard, a ScubaPro Knighthawk BCD, and a regulator with console, fins and regulator. In the turtle bag I carried my mask, SMB and spool, slate and wrist computer. In the spider bag I carried my towel, walking shorts, underwear, t-shirt and a long sleeve t-shirt. I am 6'0" and weigh 210.
It was a large package when I had it all together. I must say it was larger by far than when I carry my 3 mm full wet suit. I do not have a dry suit so I can't say if it will pack small enough for your needs.
I like my DiveCaddy and plan to buy another one for my wife to use with her gear.
It is not a quick, simple thing to pack. A larger, zip open, suitcase type would be quicker and easier with wet gear, or when packing up after a day of diving to go back home. The thing to consider with a larger bag with a frame is what to do with it if you are on a boat dive and have to take everything with you. The DiveCaddy shine then because it is very compact to stow.
Hope this helps.