Mules, great looking build! I've often wondered how well a "topper" with a passthrough like this would work on the Gladiator given it's easy to modify (at least compared to other trucks) fiberglass roof.
It's a little hard to get a good perspective from the camera shots. Does it feel easy-ish to get into the driver's seat from the bed?
Happen to have any other super-wide-angle shots of that back interior? I am definitely interested to see how much room you have in there
Sorry but I don't have any better pictures yet. It might be a few months before I put the camper back on the truck. For an idea of interior feel, I would look at Toyota Troopy and Land Rover 130 campers. They will give you a good idea of size and pass through.
Even with my open interior, it won't be any easier climbing into the driver's seat than a regular Gladiator is. The issue isn't the camper, but rather getting under the roll bar, which is above the drivers head. Not too bad since you can just swing your legs on the driver seat and ease down. Removing the center console might give more room, but I'm not sure how you would do this.