Once a pipe is lit, there's no residual magic from the lighter.
That said, I bought an Old Boy around Christmas, and it is really difficult to describe just how perfect it is. I can talk about how nice it is to have the flame on for as long as the cap is open, how it lights every time, how it cleans up with a quick wipe, how nicely the flame adjusts, etc. But you have to experience the flame. The flame is a perfect size and softness for directing it exactly where you want it inside the bowl.
The downside of an Old Boy is if there is a slight breeze or someone talking or a butterfly flapping or a gnat farting, you'll lose the flame. In that case, I use a $3 Bic EZ-Reach or my zippo.