Apparently 5.11 IS doing it. Cut-n-Paste from an email I received responding to my "April Fool's Day" query:
Thank you for contacting 5.11 Tactical. In regards to your inquiry, I can assure you that the Tactical Kilt is going to be an actual product. I can go ahead and add your e-mail address to our list and you will be notified once the kilt becomes available.
If you have any other questions or concerns please feel free to reply to this e-mail.
Thank you for giving 5.11 Tactical the opportunity to serve you, and have a great day.
Customer Service Lead, Call Center
I'm getting one (maybe two).