User blog comment:SoKoLoV/New Interview with Todd Howard and New Information & Footage/@comment-76.17.24.174-20111024000123/@comment-4317122-20111025072331

Pressing the left trigger while having any one handed weapon in the right hand, but nothing in the left will cause you to block. Having anything equipped in the left hand except for a shield, will cause you use that item/weapon/spell/torch (ya, you can burn people now) when pressing the left trigger instead of blocking. I cannot say there is not some exceptions or that there is not some way around this game play mechanic until I get a chance to fully play the game once it is out, but this is according to every video and interview released so far. I honestly dont see this as being a bad thing though. It seems to me that the developers wanted to make these choices all viable options, two handed smashing, one handed fencing, sword and shield, spells, torch and a fire spell, whatever. If there was one overwhelming bad ass choice, then there really isnt any options.