Using the drop bed for tilting does work, but it's awkward, pretty limited, and as Kawaiithulhu noted, it's not really meant for doing Scheimpflug. The back tilt and rise on the lens standard are really there to get the lens re-centered and vertical when the bed is dropped. That said, it's better than nothing for those times you really want some tilt or rise. And there is no rule that says you can't use the available movements for creative advantage, limited though they are.
They are fun cameras to use, mine spends too much time packed away. You can buy 2 1/4 x 3 1/4 sheet film from Ilford once a year when they do the special order run.