With lens mounted? They're not really designed to be transported that way-- leaves the bellows extended, and easier to damage, and of course, they take up much more space.
F64 makes a nice 4x5 film holder bag-- holds either 5 or 6. Should also note that a Grafmatic holds 6 sheets-- so two grafmatics would equal 6x dual-sheet holders. I normally carry a grafmatic and one or two fidelity style holders with any "special" film.
I'm currently using a Lowepro "Photo Classic 300W", which works, but has two issues-- the internal dividers needed heavy modification to make it work with a 4x5 camera, and it's not going to hold a 4x5 in the assembled position. It does hold my tripod reasonably well, along with the camera, 4 lenses, a spot meter, a loupe, 3-4 film holders, and a couple small filter carriers. Slightly awkward to put on, but rides pretty well when adjusted.