...as I was saying...
I'd started a new job a couple years ago, the keyboard on the work PC at the office was pretty awful, and the computer had PS/2 ports, so I brought the M13 in and used it for around a year. Then my PC got lifecycled and the new one didn't have PS/2 ports, and between the cheap adapter I ordered not alwys pasing keystrkes and the ire of my coworkers listening to it I ended up swapping in a Corsair K95 that I found when out thrifting.
I'd even done the superfloss mod, but it was still just too loud.
Since then when digging through my home assortment of crap I found more PS/2 to USB active adapters, perhaps I'll see if it works any better, but it's so loud that I doubt it'll be used too often.