I think personally that each class is supposed to reward skill with specific weapons: Gunslinger tailors snipers as does Sunbreaker(opinion), bladedancer defender and striker favor shotguns, and the rest are a mix of two of the above.
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I use striker with snipers, and it works wonderfully- Sniper covers long range, my primary covers mid range, and my subclass abilities cover short range.
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Not really most of the time.