Yeah that's the one downside about Reggies, no crowd surfing or stage diving is lame. I've seen Municipal Waste and D.R.I. there and people do it anyway but they all get kicked out. Hell when I saw Pestilence there, the guy from Vital Remains was pulling people on stage as usual and everyone up there got kicked out until Warbringer came on.
I do remember for the free Magrudergrind show, security got their asses kicked! There had to be at least 30 people stage diving at the end of their set!
Bottom Lounge would be a great venue for a show like this, but the only thing I hate about there is that if you're under 21 you can't leave and come back.
Anyway this sounded like a fun show! I'm not too big of a fan of Converge myself but their live shows are crazy. I've seen Trap Them before as well and they do put on a great show as well!
And another thing, are you in Chicago just for school and you go back to Ohio over the summer?
http://nucleus.bandcamp.com/album/hegemony - 2015 available for download (name your price)