If so what kind?
I think that pretty much every man ought to carry a pocket knife with him wherever he goes. I have found myself needing one more often than not, and back before i started carrying one i found myself frequently wishing i had one and cussing myself because i didnt.
I carry the Colombia River Knife and Tool M16-13Z
It is a durable, medium weight, single edged, assisted opening knife of 8 inches length end to end and has not let me down yet.
I ised to carry its little brother the M16-01Z which is about an inch shorter.