Yes, I've heard quite a bit about it. As you can see from the dates on the blog post it has been around for a couple of years and it is still attracting attention now.
As a set up I do think it would take a bit of getting used to for the 'traditionalists'. I think having the cleat under the ball of your feet allows for caressing of the pedal and further back can lead to a good 'stamp' and as it says here it uses more quads and less calf so is obviously more powerful. It also says towards the bottom it may reduce control of the bike in some situations which could make it more difficult in road racing where cyclists are closer together or where the course is more technical. It means that ankling is less effective so might be good for those athletes that don't ankle effectively but is likely to put more strain on the Achilies.
As mentioned above this was written about two years ago and I haven't seen masses of athletes using the position so they may be unwilling to try or there may be a few detremental things about the position we have not been told or found out. Very interesting reading though especially of you are riding a simple course and have time to experiment.
Fancy trying it when you get back on your bike?