I find I can't really "see" the block until it's on a design wall staring back at me. That's why I wait until I have all the blocks done, to put it together. You can make a really cool design wall out of a sheet of insulation foam and pin white washed flannel in place tightly around the board.
I also like the fact that the board is movable, so I'll put the pieces of blocks I'm working on onto my DB and move it close to my machine. That way I can reach up and take down pieces as I need them. The inherently important part of a lesson is that we learn something...don't you think?