Well, since temperatures were in the 50's yesterday here in Milwaukee, I decided I'd install my EBC Sport rotors and Yellowstuff pads.
Against my better judgement, I went in full bore with the intent of following the EBC instructions to reuse the pad slider/anti-rattle clips.
The clips on the first caliper/bracket I pulled (right rear) were super crusty, and I didn't feel all that comfortable cleaning and reusing the existing clips. No biggie (or so I thought). Turns out nobody in the Milwaukee area NAPA, Advance, AZ, O'Reilly stocked the hardware kits for the HD brakes. I called all of them and had them search inventory at all the area stores. I wound up ordering them on Amazon yesterday and now the truck sits on stands waiting for new clips to arrive some time tomorrow.
Should be pretty quick to finish up. All the pistons are compressed and ready to go as soon as the new hardware kits arrive.
Moral of the story: replace your brake hardware. Don't cheap out, even if the instructions say so.

Order hardware in advance or at least confirm availability in your area.
All that said, I am super excited to get my new brakes on. The rear rotors were in terrible shape. Looked like hot spots galore on both of the outboard surfaces, and both inboard surfaces only had only about 50% of disc area (in the center) that looked like normal wear patterns, which explains the terrible vibration I was getting with moderate to aggressive braking from interstate speeds. I'm pretty confident that my truck will now stop when I need it to.