I'd definitely go 1H and shield. Your job is to tank, not DPS. You'll be doing a lot less DPS than actual DPS classes anyway (assuming gear is around equivalent). That being said, doing more DPS at lower levels when there's not as much of a difference between melee classes certainly has its advantages, so in that sense for me it's more of a personal preference, but in later levels there's a stronger argument to be made for having a shield instead.
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