Does anyone know what size screws the Poker/Pure case uses?
Oh duh, I didn't even consider cutting open a ready-made cable.
If you go that route, there are two ways you can go. You can carefully open up the USB A housing and take note of which wires line up with which lands, or you can cut the cable, slip the sleeving on, then slice the leads back together. I prefer cutting away the rubber on the housing and opening the housing, then soldering to the lands. It's harder, but makes for a nicer looking cable. Just be very careful opening the cable or you'll need to buy a new housing.
For mine, I'm using some donor cables with new housings since I didn't have the money to buy a big spool of USB cable.