Dave,
Yes, I am using them and they work very well. Although the programming instructions were not nearly as good as I would have liked them to be, it is extremely easy to program the outlets.
I set up all 5 outlets to turn on and off together as outlet #1 and that's just what they do. All that's necessary to do is to plug each outlet, one at a time, into an AC outlet, press a button on the outlet and press one of the "ON" buttons on either remote. This programs the outlet to that button on both remotes. You cannot program an outlet to be one number on one remote and a different number on another remote.
Power for my layout comes from a single 15 amp line into a rather robust APC UPS and from there goes to a standard AC 15 amp switch that's in a surface mount box on the side of the layout. From the AC switch, power goes to 5 outlets that each feed power strips.
I simply plugged each power strip into one of the remote controlled outlets and plugged each outlet into where it's now-associated power strip was plugged in previously.
Now, I keep one of the two remote controls sitting on the layout and the other one at the work area off the train room. I can turn the entire layout on and off from either location just by pressing remote "ON" button #1 on either remote, and off by pressing the corresponding "OFF" button on either remote.
At present, I have no need for buttons 2-5.