Very pretty riser and some fine bows in progress. The hickory/hickory combo in a R/D ought to really perform well.
What tools did you use to shape the riser? How do you work on the piece glued over the hickory backing, without getting into the backing?
I like gluing up more than one of these backed bows at a time, it is very efficient. I like to have some blanks in the workshop when it is cold and you don't want to make a giant sawdust mess with a saw/sander.