If you finish the video, you will fall in love with this ugly leather knife
The video you can see here: https://www.youtube.com/watch?v=f52Qw44F0Hk&feature=youtu.be
it is the best tool for skive leather edge I think, and it is very cheap, what's more you can sharp the blade with 5000# sand paper a little, or just sharp it a little on leather shorp, and it becomes sharp again.
You can buy the leather strop here: http://www.leathercraftpattern.com/leather-tools-leathercraft-tools/leathercraft-tools/Leather-strop
There are 27 blades as one parcel.