Maybe look at the F-804 satchel? It's about as deep as the F-7. I don't recall if it's as long or not. No end pockets, but it's configured to let you add either the F-901 or F-902 pouches onto the wrap-around strap.
I'm guessing that the F1 is more useful since the larger back pocket can store a laptop and the larger main compartment enables your to leave the zoom lens on a couple of cameras? Things we didn't do in the film days.