My opinion is that it's pretty much a waste of time. I mean, without playing a single match you already know that it's just going to consist of a bunch of ARs, Shotguns and Fusion Rifles being spammed left, right and center with a little rocket launcher or LMG sprinkled here and there. It's just more of the exact same content. The difference? Different Rep to grind to recieve even MORE gear that isn't actually useful because in the end you need full VoG Armor for Level 30. Honestly, the only thing of value Iron Banner is going to teach anyone is that it's true that you can just sit through a match doing nothing but moving slightly every 30 seconds and still get better loot then people who actually try. It's also less tedious, because you don't have to put up with just how ass PvP balance in Destiny really is right now.