any advantage tactical sights users here?

Looks interesting. Something I would want to test before purchasing. Anyone put these sights on their firearm?

http://www.advantagetactical.com/

I don't see how that can be easier than a 3 dot sight. But it's got to better than Glock sights, I'm not kicking a field goal, I should not be trying to put the ball through the up rites while shooting