I just installed and with the dual charging coil it definitely works with the Z Flip 3. The auto clamping and unclamping is very nice along with the innovative vent clamp. It seems very sturdy!
I assume you are using this in the pictured vertical orientation? Any idea how well it would work oriented horizontally? I saw on Amazon one picture where it was mounted horizontally but it just doesn't seem like it would be as secure since it wouldn't be held by both sides of the phone. Also it seems like it might be difficult to get the auto-clamp to go with it mounted horizontally.