These weren't designed to get over that problem though. It's the issue you have when using one involves tearing open velcro, or undoing a clip, then foraging around for a bang, then having to use two hands to undo the cap, strike it... Then unless you wanna risk losing the rest of them... Redoing your clip or velcro. That also assumes that your bang goes on the first strike of the thumbnail sized striker...
I tried it myself... From "go" it took me around 8 seconds from decision to the bang leaving my hand and securing the pouch, weapon back to ready. And I had to drop my vision to look at my pouch and bang... That assumed a first strike "burn" and mine usually take two, maybe 3...average of about 9 seconds, total. That was also velcro... Much quicker than clips... That's at least 5 seconds to get noticed...
These, with a striker plate... Decision to bang leaving my hand, weapon ready... Average of 2 seconds... With the added benefit of keeping my eyes on target, weapon up and no velcro noise. And the greatly increased striker size guarantees good ignition...
Some situations increase their case... Going from main to pistol... Snipers or cqb... Drop main, reach for both pistol and bang... Pistol in strong hand... You can transition and throw a bang simultaneously... Extremely quick breaching...
It's a tool for increased efficiency. And they do greatly increase it... Same as fast mags, ready mags and kydex holsters...