spook,
I see what you are saying, and would normally agree. The only difference is that I am doing neither of the two reloading methods you mentioned. I am accelerating the same as I normally would without a reload....just reloading before I get any speed up.
That said I'll say once again that this is just the fastest way for me and my body type.
And also....crap happens...I've been known to occasionally blow reloads. The reason I like reloading on the move like I do, is that the gun hasn't started moving with your body yet. It kind of gets rid of an extra variable in the reload, which is the main reason I believe it is more consistent.