will it require much skill to use the creature editor as far as shaping the spine to look right goes?
it probably won't take too much skill, but I'm sure there will be a turtorial made for the editor for those that have trouble, whether theres one in the manual, a document on the disk, or one that is fan-made. Since the point of it is to experiment, you can easily learn to do it. although more complex stuff could use a how-to document or something.