I occasionally use this technique when the planned exit point falls between two autobrake settings but only if the PM has been briefed to change it on request. I find it smoother (and better for passenger experience) to land with a higher setting and reduce it rather than the other way round.
When I’m positioning and someone takes out the autobrake then applies jerky heavy braking, from the reactions of those around me they appear to think that the chances of going off the end have dramatically increased. A firm landing followed by a gentle rollout is preferable to a smooth touchdown followed by increasing retardation, it seems...