I've actually taken quite a liking to the crossbow lately. In terms to fighting players, it's almost useless but it makes navigating through towns extremely easy. Bolts are everywhere and you can recover them after firing, so ammo is rarely an issue unless you manage to get yourself swarmed. I've only ever killed one player with a crossbow, so if I was intent on killing players I'd definitely use a CZ 550. The crossbow also makes me feel like a badass.