I got my first one this week at SFO. I made Jet'Dillo come with me so although that means we both get the Royal Treatment, we also have two people to keep an eye on our stuff. They made a weak attempt to send him off on his own through the regular line (who would volunteer for this?) but I insisted. It took a good long time, we each had a laptop, two bags plus coats, shoes, my walking stick, etc.

I was not terribly fond of having my laptop sit around unattended on a table (but at least I could see it through the glass) or inspecting the contents of every single box, bag or package in my carry-on. (I like to sort things into clear plastic bags.)