A demo of my Final Cut Pro X effect that gives you control of how Magic Lantern Unified HDR footage is composed using a single set of controls. Note that this workflow doesn't allow for frame interpolation, so 25 fps footage will display at 12.5 fps.
Install this effect by following the link at alex4d.wordpress.com/fcpx
You can then choose the transfer mode, opacity, opacity curve and contrast curve for the overexposed frames and the saturation of the combined frames by changing settings in Final Cut Pro X.
The settings used to make the video above are shown on the download page for the plug-in.
It is currently available for 23.98, 25, 29.97, 50 and 59.94 fps source footage.