I'm at a T3 so it's really a no-brainer for me. If you're at a decent school, great rank and law review, I can see how it would be a more nuanced choice. GW, not to mention living in DC, is very expensive and not 'Top 14' prestige, but close enough to make it a go for me.
I'm not expecting a job through OCI although I hope I can participate... my old school has an extremely poor (read: effectively nonexistent) OCI program so again, a no-brainer for me. ;-)