Double overlap grip (ala Jim Furyk)

I have never heard of this until now. I googled it and it seems to help those who are trail side dominant and / or close the face too rapidly through impact. There is a thread on it on golfwrx.
This got my attention as I suffer from these issues.
I just tried a few swings without a ball and it does seem to keep the face from closing for that split second longer.
I will certainly give it a go at the range. It might take some getting used to though.