I haven't had the setup too long, and it hasn't been used off-road yet, so I can't provide much feedback.
I can say that with the "short" RAM arm and a cradle (phone/gps/whatever) at the end of it, there's a bit more flex/vibration than I would like. If the same RAM arm is setup vertically (which minimizes leverage on the mounting point), things get a lot more stable.
My intent is use this spot to mount my DeLorne inReach device, and possibly the fridge's remote temperature sensor, so the items will be quite light and used sporadically. I don't anticipate issues, but I may create an aluminum reinforcement plate that will sit on top of the rivnuts and spread the load/forces out.
Thanks, folks! I'm quite excited to finally have this on.
The metal post on the passenger side swingout is a mount for the FrontRunner drop-down table. It's not an ideal solution and not what I had envisioned when I requested mounting the FR table, but it is what it is. The table is meant to be transported on the driver's side swingout (there are angle iron pieces welded on the back, towards the tailgate), and then removed and "hung" on that metal post/mount. It ends up being rather bouncy on that post, so I'm not sure I'll actually use the table as intended, but time will tell.
I still need to wire the new backup lights, wire the new license plate light, get a new backup camera and mount it in a better spot than OEM, and possibly relocate the license plate from where it currently is to a more visible location.