They both share the similarity of non identical sides to the blade - I really don't know much about Kamisori so I'll leave it to somebody who knows about them to comment.
Both sides of the microtome have a bevel, so shaving really isn't any different to shaving with a regular razor. Changing the angle when switching between the ground and unground sides gives a much nicer shave but apart from that the process is identical.
I included a photo of the profile of the Flatters and Garnett microtome - I played around with the image to make it easier to see the grind. One side true wedge and the other slightly hollow ground.
http://i16.photobucket.com/albums/b2...ps56733ff6.jpg
Ah, annoying there is a reflection in the photo, making the unground side look slightly curved - it is dead straight in reality.