If it is dedicated suppressed, why would you need the ability to go from a "suppressed" setting to an "un-suppressed" setting like what the switchblock provides? Not to mention the cost difference and rail limitation that you run into vs something like the SYRAC...
As for the buffer/spring game, it's a bandaid because it does nothing for the amount of gas that is coming through the gas system. The heavier buffers and springs only slow down the carrier group enough to avoid beating your gun to death...not to mention that after a while the port will erode, and you may need to step up to heavier springs and buffers...but what if you're already at the heaviest you can go?
I personally would rather tune the gas system to run whatever buffer combo I choose the the "exact" gas pressure you want. The plus side is that the port size doesn't matter at all when you can adjust the gas flow down with an adjustable block.
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