KATANA-FT Leaf Bud Trimmer Spin Trim Pro Cut Reaper

Has anyone ever used the KATANA-FT Leaf Bud Trimmer Spin Trim Pro Cut Reaper
Just curious on how well it works I plan on getting it and wanted to know if anyone has used it and what the outcome is?

http://www.growsmarthydroponics.com/Katana-Ft-Trimmer_p_4713.html

Just make your own buy a metal fan and the same thing for 20$