Yes, a sleeve on the back would be ideal. I’m finding straps, like the one on the black ebags tote above, but not sleeves.
Those of you who’ve used bags with a strap on the back rather than a sleeve, how has that worked out for you when you stack it on your carryon?
I’m also wondering about small duffles, again with a sleeve on the back. I don’t need it to look pretty, just hold a lot and yet miraculously fit under the seat.