I purchased one of the black nylon SWK sporrans myself, specifically with the 5.11 kilt in mind. Where the 5.11 video showed the molle pouch tied to the D-rings of the kilt with paracord, I opted for a couple brass double-ended snap clips.

I suspect the 5.11 crew simply grabbed a molle pouch from their own product line (after all, the "TDK" was meant to be a joke, so likely not worth buying an actual sporran for the video).

Given the styling details of the TDK, and the "intended" market (the tactical/tacti-cool crowd), I have difficulty picturing a sporran not styled for that same audience, working very well with the TDK. I'm not saying it can't be done. I'm just saying I can't picture it.

As for the jonesing, I agree. I ordered 3 TDK kilts, one in each color. It'll be a long summer.