I shot my last video job, a fashion-travel thing in sweden ( https://vimeo.com/100425355
) using the 5d III w ML raw and I have to say, this hack really works great and the results are so much nicer than anything I was able to get from this camera before. I used the fast sanDisk cards, after six days of shooting I ended up with about 1 TB of raw files. Edited in prores LT and graded from the original cinema dngs in resolve.
If you ever hesitated to try magic lantern, give it a try, I did not regret it.