I have to agree that the author's tone didn't do much to make me inclined to listen to much he had to say. That being said, here's how I wear my Utilikilt, a mocker:
Shirts: Tees most often, with a sweater or fleece over it in cooler months, occasionally a polo shirt or casual button down. ALWAYS TUCKED IN. No matter what shirt it is, I tuck it in. Wouldn't want to hide any lovely pleats, now would I?
Footwear: Usually a pair of 6-8" high logger-style boots or my hiking boots if I'm on the trail. I don't quite have the confidence to go with lower shoes yet and I always scrunch down my socks (SmartWool style) with my UK. Or if I'm at home, I'm barefoot.
Knees: One of my favorite things about my UK is how the narrow apron falls between my knees when I sit down. Of course, I'm careful to maintain my modesty, but sitting with my knees together is just not comfy. And I'm wearing the kilt for freedom and comfort, dang it!

Kilt On!