With all modern mounts, the iron sights can be used through the AimPoint, and will appear in the bottom third of the optic, so as not to interfere with the optic under normal use, where you look over the rear sight.
See here:
[url]www.ar15.com/forums/topic.html?b=3&f=118&t=164702[/url]
The EOTech, unfortunately, is setup to center the irons in the field of view, which IMO (and others) causes the irons to block too much of the field of view. And because the mount is integral, there's no way to correct this. Hopefully it will be addressed by the manufacturer at some point (along with ARMS throwlevers! I can hope, can't I?). For the EOTech, I make an exception to my "no front flip-ups", as my ideal configuration for an EOTech equipped rifle would be front and back flip-ups to get them out of the way.
-Troy