Wow. I live in a sales/marketing world and I never heard of this. I guess nobody will drop a dime on the other because they all have the same amount to lose.
Interesting though that Snap-on (my world not yours) does not do this.
http://buy1.snapon.com/catalog/catalog1.asp?tool=all&Cat_ID=121069&Cat_NAME=Power Tools, Cordless&store=snapon-store
See this page if you are interested.
Bob