In my mind there are only TWO types of reloads in IDPA- slidelock reload, and reload with retention. Since the rulebook CLEARLY STATES that the reload with retention and the tac-load are interchangeable, and since the RWR is faster (for me, anyway), I have removed the term "tac-load" and any semblance of the technique from my mind.
This discussion reminds me of a cartoon I saw years ago. It showed a marching band with every member except one marching on the same foot. The caption read, "Look...little Johnny is the only one in step!"