Hence my explanation "on the bike". If I fall off and lay on my back, I am probably badly hurt already (hopefully not dead) and my weapon is the least of my worries at that time. (note to self, do NOT fall of the bike )
Also, 6 o'clock works well for me on the mower. 3 o'clock not so much due to close proximity to the shift lever on the RH side. Also, my left hand is busy holding my beer and the right is used for steering and cigar holding.