Adjustable dropouts mean you don't need to centre the wheel and retension the chain every time you have the wheel out, even with rim brakes, but that's hardly a massive problem.
Forward facing horizontal dropouts with adjusters should be the same.
@Jon. started
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Adjustable dropouts mean you don't need to centre the wheel and retension the chain every time you have the wheel out, even with rim brakes, but that's hardly a massive problem.