Has anyone ever used Featherock for base rock?

[cc_bruno]

I'm just wondering if anyone has ever used or heard of someone using featherock as base rock? One of the local landscaping places carries it, and they say that it's chemically neutral. Here is a link to it:

http://www.landscapecentre.com/featherock.htm

Can anyone think of a reason to not use it? I'm new to the hobby and I'm trying to save a buck or two so that I can put that money towards other equipment, (skimmer, MH lights, etc). Any help would be greatly appreciated.

Rob