Works like a charm. Extend the barrel fully, and apply the tape so that one edge is touching the FURTHEST part of the barrel from the camera. Apply carefully and smoothly. Make the "joins" at the BOTTOM of the lens barrel so that the ends of the tape are practically invisible. Do not allow the tape to overlap at the join; if there is any place where there are 2 layers of the tape, the barrel will NOT extend/retract past that point, because the thickness of 2 layers of the tape is too great.
It's black, so almost invisible, and this type of tape is EXACTLY the right thickness to provide the resistance you need. Apply it to the FAR end of the barrel, so that when the lens barrel is fully RETRACTED (at the 24mm position), that is where you get the resistance to creep from the tape, since you'll typically want to be carrying the lens around in its RETRACTED position.
For myself, I'm very satisfied with this solution.
If you damage your lens doing this, don't complain to me! I don't think it's risky, but I'm not taking any blame! :-)