Most internet pictures don't do this bad boy justice, with the above being the exception. When I ordered my ATR, I assumed it was going to be a massive blocky hunk of steel. Needles to say I was giddy when it arrived, thinner than an unlinered D3! It gives my Ayoob a run for its money, which I never thought was possible.
The knife does take up a fair amount of horizontal pocket space though, and the pocket clip is the opposite of discreet. At least 3/4" of the knife is exposed from the pocket, so, on the times when I don't feel like announcing "I'm carrying a big ass knife today" to the world, I just tuck it IWB. Its very comfortable in that position. The pocket clip is a bear, so I added a lanyard, and now it deploys just fine.
If your looking for a butter smooth beast for urban, private consumption, you could do no better. For the woods or for use in public (unless your a fireman) get something else.