Back to the Smart L bracket, it's interesting to note that Cambo used the same tech in their latest tech camera, which is an excellent design as I tend to due a lot of vertical work in panning. It's just a great added amount of security in that you don't have to totally release your camera to rotate it, just like with the Smart L bracket.
The only issue I have with the Smart L bracket is that the foot is really only designed to use with the 80mm lens, (standard lens) on the XF, and that should be re-examined by Cambo ( I don't believe Cambo makes the Smart L but instead it's made for them). I asked CI to ask about a custom foot plate that would allow the use of at least the 55mm LS or 150LS (both close in overall size) even the 35mm LS but the company felt that the added weight would be too much for the plate to support. My take is just the opposite, just make the plate stronger, that is an easy task. Sure it might add weight and cost, but it could be done.
One other note, on the XF, the default position of the plate makes it hard to remove the back from the XF since the plate runs under the back and you need to remove the 90 degree finder to get the back off or remove the foot. Many times I reverse the plate so that the foot is towards the front of the camera. I do with with the 55LS and 45D and you can get nodal solutions with both. Can't quite get there with the 35LS, but still much closer than the default position. I realize I am placing more strain on the foot, but so far no problems.
So far I have been able to adapt the smart L to both Fuji X-T2, and X-Pro2 and Pentax K1 (although no battery grip can be used on the Pentax).
Paul Caldwell