@Journeyman, are you sure this is because of the wind? I see no other traces like broken branches on the trees. It could be that someone just pushed the bike. Besides that, this is just one accident, not massive phenomenon.
The only benefit of your footies is that you can always decide to put it or not. However, the bad sides are that you have to lean many times, stress your backs and have your pockets muddy.
Guys, I asked here do you know where to buy this, I didn't ask for arguments not to buy it.
I've already wrote, my almost 20 years of experience of using this on multiple bikes is just positive. If you park your bike wrong it can fall anyways having a foot extension or not. and your picture is just a proof of that. Even if it was that windy, you (or the owner) should not have parked the bike there, you (he) should have found some safe place by some wall or something.
If you look at GS forums, I am pretty much sure you will find people using this in the US. I can see that Revzilla offers some. If you look at German ebay for example, you will find thousands of offers but no one for R3. But I will keep searching.