I had one to start off with but it never worked very well from the start. The spark didn't seem to light the butane reliably every time, you had to definitely be sucking on the pipe before putting the flame near it else the flame often went out and really it's not designed very well for holding it to the bowl of a VG for a long time.

I eventually came across this one for flaming creme caramels in a cash and carry. German make, cost just a few bucks, has a fierce flame and is easy to hold at right angles to the pipe.