Shapers Drum

Anyone using Shapers Drum?  Is it worth getting?  I'm using standard cutting knives on my planer.  If you use it, is the final product better?  Does it save you time on sanding?  All comments are appreciated.

"“Why should we be in such desparate haste to succeed at such desparate enterprizes?  If man does not keep pace with his companions, it is perhaps because he hears a different drummer.  Let him step to the music he hears however measured or far away.”  H.D. Thoureau is still relevant.  The drum has its place, and is a good investment, but beware of bad vibrations…

oh, by all means buy some, my friend who lives a few blocks south is the one who created them.  He’s counting on you to use them!  They do work well.