These cabinets are awesome! Super solid, no squeaks, hold my gear securely. On the driver's side from front to back, I have: the 6" open shelf, 48" standard depth cabinets, then 40" shallow cabinets over the bed. This has been a great combo. I installed them using the Adventure Wagon brackets from FVC onto an Adventure Wagon interior. Once the cabinets were installed using the brackets, I drilled a hole in the lower corner of the sides where the cabinets sit next to each other and bolted them together to add even more rigidity and make sure the seam always lined up perfectly. The latches seem strong and give me a lot of confidence once properly adjusted.
I had borrowed a van previously that had soft storage bags and I found it annoying because everything slammed around when off-roading. The only room I see for any improvement with these would be somehow reducing the clearance needed on the inside of the latches for them to properly close. 10/10 would recommend.
The shallow depth is a great option to maximize overhead space with a bed below, while still getting a lot of storage volume.