If you learn to not snap the throttle wide open at zero RPM where there's little air flow to pull fuel through the jets, you won't bog it or need the accel pump.
If you look at Dell'Orto carbs with pumps on them you'll see that every time the slide closes and is opened up again the pump shoots a stream of neat fuel down the intake tract, which doesn't sound to me like the ideal situation for good economy.
I've always disabled the pumps on my bikes that had D'O carbs, and they worked fine that way on both street and track.
cheers,
Michael
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