Excellent question! If it is because he is such a gentleman compared to the Mafia-type Clintons (with my apologies to the Mafia), I would suggest that this is an excellent way to get killed, i.e. showing up for a gunfight armed with a knife.
Hell.
ARmed with a knife at the Cltinon's gunfight?
Bush (and/or more likely his Washington-based political "advisors") are showing up to the democrats/media's gunfight armed with a piece of tissue paper to wipe the Clinton's nose when she sneezes.