When I was at the WoodWorking Show, someone from LN/V showed me how to emulate a scrub plane. He was using a Low-angled plane with a blade that appeared to be ground with a lot of camber. Now I'm asking myself whether it would be helpful for it to be "dished" as well--or wouldn't that matter because of the amount of camber? I intend to try the same idea with my #5 Jack plane (comments welcome--please!). Intuitively, making the blade iron "dished" means removing more metal which seems bad.
Bill