I've only used it in applications at my job. I work for a mechanical contractor, and some of our installations have to pass rigourous noise/vibration performance testing. When we have instances that are tested out of limits (by a 3rd party firm), we have to fix it. I've had our crews apply the Grainger compound in several cases, and it did the job in all. These were all ductwork/equipment panel applications, with offending noise in the ~1K-5K BW. Other applications (pumps, piping, etc.) usually require other solutions like foam/cork pads or isolation hangers.

To date, there's been no leftover material for me to bring home...

I'm sure the pads you mentioned are effective in their place, but I doubt that wood cabinets/LF apps would qualify as that place. For pad type of material, I use a constrained layer foam/foil product that GM turned me on to from Home Depot*. Way cheaper than damping compounds, and very cost effective on horns. It ain't pretty, but that's OK. (it's beatiful compared to the candle wax/peanut butter/mass-quantity-silicone...)

* http://www.homedepot.com/Building-Ma...atalogId=10053

I still use 'glass for cabinets, it's effective, cheap, easy to come by, and not nearly as hazardous as some would have you believe.