Yeah, it's pretty clear where this new rail square got it's design "inspiration" from, but just to throw this into the mix...
There is one small difference I noticed which makes this square an interesting option.
From the pictures, It looks like you can use the top or bottom of this square to reference your cut.
Which means, if I'm not mistaken, this "new" square does the job of both the GR-16 and the GR-16PE.
If that's the case, then it looks like a pretty okay option for someone who lives in Canada like I do. With shipping to Canada, the GR-16 comes to $218.45can or $417.90can for both TSO squares. And that's if it's not hit with any extra duty charges when it hits the border, which happens to pretty much every package sent using FedEx...in my experience.
Again, just wanted to throw that into this very interesting discussion.