1. However, I would challenge you to prove that you can do a mag change faster with the 2 foot stick than a single mag set-up.
Test results using empty mags with my wife watching the second hand on the wall clock (sorry, no stopwatch available), I did 10 runs as follows after her "go" signal:
1) Pulled trigger to simulate last rd fired.
2) Rotated dual mag to insert "fresh" mag.
3) Worked charging handle to chamber "fresh" rd.
4) Reacquired sight picture.
5) Pulled trigger again as the "stop" signal.
Times were 6 sec, 6 sec, 5 sec, 6 sec, 4 sec, 5 sec, 5 sec, 5 sec, 4 sec & 4 sec for an average of 5 sec. Would anyone care to try this w/a single mag setup where you retain the empty? Howabout w/o retaining the empty?
2. In combat - it HAS to work. The dual mag setup exposes the top mag to damage, malfunction and definitely - FUMBLING - while you figure out how to wield the un-Godly contraption.
Agreed in principle but then I'm not going to the sandbox and neither am I FBI, USSS, DEA, LEO, SWAT, active military or a mall ninja so I'm not terribly worried about the concerns you stated as I cannot envision any realistic scenario where I would be using the PS90 for SD/HD and damage the mag (after all, it's not rattling around in a Humvee, constantly exposed to the hellacious environment of military combat) much less expending 50-100rds. As to "fumbling", that's what *training* is for and I know for a fact that it takes *practice* to accomplish smooth mag changes w/*any* firearm. I'll ask again: You haven't tried the dual mag setup, have you? So how do *you* know about how unwieldy it might be?
3. If I'm in a situation that I HAVE to constantly fire, I will be dropping the mags, no worries about some pouch.
And what, pray tell, will you be using to carry the spare mags you intend to drop? Which is more likely to damage a PS90 mag: dropping it or retaining it?
4. If I have 2 mags clamped and the rest in a holster, under stress, I do not know whether to flip the dual mag - or grab one from a holster. When I run singles, I know what I need to do EVERY time.
If that works for you because you can't train to the level to know that you only flip the mag *once* then the single mag setup is obviously best for you. Besides, all you have to do is *look* at the mag to know if it's loaded or not.
5. And if - and this is only a big if - you succeed in flipping the mag the right way and snap it in without loosing or turning a bullet faster that a single drop-grab-lock-load, you run the risk of a malfunction of some kind - I'm sure Murphy has one waiting just for that scenario.
First, you're assuming I'm going to need more than 50rds (how many civvie encounters have *ever* needed more than 50rds? Hard data, please.) Second, please elaborate on what these "mystery malfunctions" might be (unless, of course, they don't exist...)
Finally, I know that MagazineParts sells their dual mag clamps to LEO's so why don't you contact them yourself to verify to whom and how many so you can't accuse me of falsifying or exaggerating the data.
You don't like the dual mag setup then fine. No one's forcing you to use it or like it. However, I do suggest you at least acquaint yourself w/the item in question before denigrating it so forcefully (it helps to know what you're talking about...)
Tomac