Saw these while browsing around BPS last night. Anyone tried them?

Seems like an efficient way to get your fletching and wraps all done at once. Weight wise - didn't seem too drastic.

Here's a link for what I am referring to:
http://www.basspro.com/webapp/wcs/stores/servlet/Product_10151_-1_10001_99937____SearchResults

Any info is appreciated. Thanks!