Good answers here; I don't have one either but I have contemplated getting one of those too; I assume it is the same steel Emerson uses on almost everything else, I'm too lazy to check on their site right now, but if it is 154CM it is an excellent steel; it is tough, very tough.
Ok, I went and checked, got rid of the laziness, it is 154CM indeed, and check this out, from their site:"The Police Utility Knife fulfills all of the needs for an Emerson designed fixed blade for police and tactical utility applications. Members of the British SAS have said, Now this is the knife weve been waiting for. Because of the design features of this knife it is perfect for the serious off road trekker, and I mean from Afghanistan to the Belgian Congo. The knife features a short, stout blade with an extremely strong V grind and is honed to razor sharpness. The handle features a deep guard and positive thumb ramp designed to provide a no slip forward safety grip for the knife. Now available with serrations and a molded sheath with tech lock."
I guess if it is good enough for the SAS guys, it must be ok for us normal guys.