the idea is to give you a faster reload. if you're not in dire need of a fast reload,
if you sort of keep track of how many bullets you've shot you shouldn't ever be in dire need of re-load. don't use the redi-mag'd mag, pull from a pouch.
as to the dropping of the mag- nothing says you have to let it drop free, not any more so than with any other reload.
Hey, I just watched the video. Maybe he caught it with . . . nah but since the purpose is for end-game situation reloads, and since most guys train to drop empties anyway,
well, I'm like OLD and I remember being drilled that a dropped mag was a lost mag or one added to the enemy S-4 its sort of moot.
I don't think waste or enemy re-supply is moot, I think it's stupid. some will drop both mags at the same time- you can just grab both mags, hit the release, pull down, move over, push up and seat the fresh mag, and drop your empty in your dump pouch.
Or you could pay attention to the enemy.
the difference between the redi-mag and taping or mag-cinching mags together is that the redi-mag protects the top of the mag. it keeps the top round from walking forward, which invariably happens to taped mags, and keeps sand/dirt/debris out of the mag.
Sorry, I wasn't clear. I think both are stupid.
the weight issue is an offset, like all things. some guys run redimags on mk18/CQBRs- defeating the purpose? no- the purpose of the shorty is primarily better maneuverability, not weight. and with that package, the weapons' already really well balanced- adding an extra 1lbs in the center really isn't noticeable. its gonna be up to the individual to decide if sooper-fast reloads are worth turning a 8lbs loaded weapon into an 9lbs loaded weapon. it is, for some.
1+1+1+1+1 . . . +1+1 = A LOT eventually. ("150 pounds of light weight equipment still weighs 150 pounds.")
obviously you still need to be familiar with your LCE.. the redi-mag isn't trying to replace training,
it's just trying to shave a few milliseconds off a mid-fight reload.
don't discount this option.. it's a really good tool for some people in some situations.
for the record, i don't use a redi-mag.