I think this idea is pretty cool, but at the same time I wish that it was more than just a 2 song cover split. Maybe an original tune or two (even if they're just B-sides). I mean, within a month or so both bands will have released new albums this year (Rise Against's already came out, Face-to-Face will be sometime in May I think), so they're both bound to have some extra material laying around to release on something exactly like this.
I also wish they had picked different songs. Kudos to Rise Against for not picking "Disconnected" but I'm a fan of Big Choice so my preference would have been a track from that (like the title track or I Know You Well). And I'm just biased against The Sufferer and the Witness and very pro-Revolutions Per Minute and Siren Song, so of course I wish that Face-to-Face had picked a song from one of those two albums.
Oh well. Beggars can't be choosers. I learned that from the Bouncing Souls/Hot Water Music split a few months back.