I picked one of those up this past fall and even though it does the job you are way better off with a band saw. The bladerunner uses a jigsaw blade thus cutting in both directions which means you need to put pressure on the blanks as you cut them to hold them to the table.
If you get a bandsaw that becomes a non-issues as the blade is being pulled downward as you run your blanks thru.
The bladerunner is a great saw but not for pen blanks.