I have that same bag you posted the photo of and all I can say is that it is THE bag to have IMHO. I really like the wet/dry separation, there is a mat to stand on that can be removed if you choose to do so and the mouth opens up wide on it. I've flown with it numerous times now and it has withstood the wear and tear of the baggage handlers in the airports. The bag still looks brand new minus a scuff mark here or there that is inevitable when being tossed around by the baggage handlers. I like the pockets on the sides to place smaller items in there-- cell phone chargers, camera power adapters, fly boxes, terminal tackle, etc. I'm not a fan of the wheeled ones because they add weight to the bag and cost unless you're buying one of the wheeled duffels that are cheaply made to begin with. That might be something to consider for your travels with Mrs. Ard though. It might make things easier on you in the long run!
This bag + one small duffel holds all of my fishing gear and clothing for a 10 day fishing trip. Even when loaded down, the shoulder strap makes carrying it as comfortable as can be given the weight. The bag can get heavy when loaded down, but I carried a hockey bag for 20 years so this is nothin
Great bag, well made, recommended and would buy again if I was in the market.
The other thing that I am happy about...when I first got the bag, before it had even gone on a trip, I had a problem with the zipper coming off the track when I attempted to load it up. Contacted the shop were I purchased, who then contacted Fishpond. Fishpond sent me an RA and I shipped the bag back, they shipped me out a brand new one and I had it within 2 days--before my trip even! Never paid a dime for shipping. They stand behind their products, and customer service was excellent. For the price, this is a great buy.
If you want a more minimalist type of bag, the Patagonia Guidewater might be worth a look too. Obviously warranty is a NON issue with Patagonia as well. LL Bean might be a place to look as well since they also stand behind their products. Luggage as you know tends to take a beating over time.
I do have another bag, a Sage to be exact, that I use for single day or overnight trips. It's basically the same principal but smaller. The Fishpond in reality can be used as well but I'm trying to save it for when I really need it.
Hope this helps, can't wait to hear what you ended up with.