We still run it in our 450, but it's very much borderline and could be cut in one of the next updates. It's a cool card though and can be oppressive in the right deck, but it needs some work during the draft to get there. I'd say it's only for cubes drafted by at least 6 people. I guess our cube still running it is mostly the result of using 8-man Rochester, a format that makes sculpting your deck around a card easier than most other formats.
It looks sweet, too, for what it's worth.