I tried the HTFU band with the black Placebo band on this morning's MRR. My opinion straight after the ride was that the combination was no improvement over either band alone, but I may have been a bit hasty in my judgement. Given the conditions (first hard ride after a week of over-indulgence) and the comments by other riders about the pace today, there may be something in this combinational approach!
Next time out I will try the HTFU plus BOTH Placebo bands. Say hi as you see me as I zoom past!
Maybe the colour of the Placebo is not totally in tune with the frequency of your body's natural energy field. Black absorbs energy from solar radiation, so that might be causing an imbalance. Consider using a white one next time so as to avoid this problem.