I bought my first DA revolver (used Ruger Security Six 4" .357) about a month ago, and following the leads of McGivern, Keith, and Miculek I am committed to mastering the double action trigger. So far, I suck, but I'm making progress. I dry fire almost every day, and I have gotten to the point where I can keep a penny balanced on the barrel for 8 clicks in a row at about 1 click per second. Unfortunately, my live fire accuracy still leaves a lot to be desired. I noticed last time I was leaving the range that they have a S&W 317 (.22LR) hidden among the rental guns, so I'll start using that for extended cheap, recoil-free practice to refine my accuracy.
On a related note, I have noticed a trend on the advice I get regarding DA trigger control: shooters recommend a smooth stroke, and cops recommend staging the trigger (I think that's the right term for pulling up to the release point, holding, and then firing essentially single action). Is there something in LEO training that contributes to that trend, or is it coincidence in my small sample size? (I use a smooth stroke.)