I see B when people want to pause for a bit - the vertical orientation will slow the progress of the cherry, and reduce the stink accumulating on your hand if y

I see B when people want to pause for a bit - the vertical orientation will slow the progress of the cherry, and reduce the stink accumulating on your hand if you're just gonna sit for a while. G is the opposite - the cherry is hidden. Used to light and smoke in high wind, and to hide it from your spouse or from snipers.