I think it could be a pretty decent idea. As the above poster said, the OP did not say he meant to use it as a primary defense weapon. Those in the thread that just think it is stupid, might want to look in a mirror. To me, calling another man's survival ideas stupid is, well, stupid. Especailly those ideas that have enabled men to survive for hundreds of years..... Just my two cents.
"You fight until you die. That's the whole deal in life. PERIOD." Regular Joe