The one yellow follower mag my 1006 came with I actually did notice a nosedive FTF my first trip out to the range with it. However, that mag apparently had worse down to it as well (the feed lips were shaved back by the previous owner for some reason).
And that was supposedly the reason for the 'upgrade' in 10XX-series mags from yellow followers to white ones. There was apparently a change in the angle of the follower to keep the bullet's nose more elevated for feeding up the ramp.
S&W was said to have received complaints concerning nose-diving rounds in early runs of 10XX-series pistols.
I have to assume at least some number of these complaints came from the Bureau's FTU - since their field agents' 1076s would've been fed by mags containing these early, first generation yellow followers.
And if you think about it, the FBI/FTU would've definitely been the first folks to alert S&W to the problem - if it was deemed to be a significant one, and not just occasional or user-induced.
I had two such mags with the yellow followers that came with my 1006. Those mags are strictly for
range-only use.
So whether for night-stand duty or street carry, if it involves a serious use of your 10XX-series pistol, it's the white followers in your 10mm mags.
If your a 10mm man, always ask yourself:
WWSCD? ***
The question answers itself:
white followers.
*** What Would Sonny Crockett Do? 