On One Pompino owners...

If your momentum is moving your legs, you need to learn to pedal. If the top run of the chain is tight all the way round the crank revolution, as it should be and as it is for pretty much all moderately trained cyclists with two working legs, then the presence or absence of a freewheel mechanism cannot make any difference.

^this only applies to clipless pedaling - hence the old school messengers could pedal harder wearing their rubber sneaks pedalling on a fixed system (my theory).