Anyone have any comments on easels?

When I learnt at school we didn't have them. Since I started to get back into home printing a couple of years ago through acquisitions of 2nd hand gear, I have not picked up an easel so to this point I've neven seen one used.

I gather they are mainly used to keep paper flat during printing and for moving the L's to crop. But anything else? These first two uses are easy for me to get around in other ways, so I'm wondering... New easels are quite expensive here in Oz so I guess there must be some value to them?