Hm....in certain situations you can focus as a DPS, but your defined role is Tank. So while you can kind of gear towards DPSing, you'll be expected to tank first and foremost. Once you get into certain content like primals, if you're off-tank you can be a pure DPS and only need to main tank if they go down, otherwise, at best, you'll stance dance but you can't forgo tanking completely sadly.
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