I might remark, however, that it's often useful to have a relatively straight surface...like there would be at the top of a jug turned on its side. Sometimes you have a straight, or relatively straight, run and you just want to push (or pull) through it. You still get parings falling away from the work area but the "feel" would be more like on a flat piece of glass or marble.
edited for punctuation and clarity
Edited by DWFII - 3/5/16 at 6:05pm