I finally broke my Reach multiplayer cherry last night and played a few matches. Most of those were teaming up with Kabob on multi-team matchmaking. Probably not the best idea to start out with, since it absolutely killed my k/d ratio to begin my Reach career, but still had a lot of fun. Kabob picked up my slack quite a bit and we finished high in each of the 3 matches we played (one headhunter and two elite slayer). In past Halo games, I'm typically a team slayer kind of player.
Overall, Reach just feels faster than previous Halo games, but that may just be that I've not played Halo in quite some time. I had a lot of fun though and tried to help Kabob get a few more kills by luring people to him. It actually worked a couple of times I think, but it's not like he needs my help. Those two elite slayer matches were on Reflection, so to succeed in a close-quarters match with 80% of the people in there trying to kill you is hard to do in the first place.