I had noted as Sarge mentions that Kokua has added it, which makes sense since McCabe, who works on the inwz viewer also works on the kokua/imprudence team.
And altho MetaGirls thoughts have value, I do agree with Maria that separating grids out of OS reporting based on all sorts of different parameters is unnecessary [paraphrased]...there was quite a bit of talk here on this in the past.
fyi, I read recently that inwz forked off @ OS 6.5
As to amy OS based grid being different and innovative, I would have to again point out Kitely is doing that, and hands down. Once they open to HG as promised, it will be quite interesting there. And for a shameless plug I just spent some time opening a little shop in their Kitely Plaza.....something I had told myself never to do again.
And I also agree with Maria that this is newsworthy enough to do an article on it.