I'm no expert, by any measure, but here is my take. First, there is almost no historical report of any reloads during a civilian DGU. The odds of performing a reload with an active threat still before you are so low that I have no desire to train for that possibility.
Then why practice reloads at all?
Same for malfunction drills...
I understand the debate and why some wont want to adapt, I just think the difference in technique is negligable but much safer.... Historically, Ive never heard of a civilian reload either but rounds have left the range...