From my talks with Lutron some time back... a switched outlet is no problem. However, the dimmed outlet idea is a bit more complicated. If you dim a conventional run of the mill outlet then that is against code. Imagine plugging your vacuum into a dimmer.
Lutron solved this by making a receptacle that has one always on and one that has a special plug for it. I think the blades were turned a strange angle. This made the thing legit, but the downside was that you had to hack off the end of your lamp plug and replace it with one of these special plugs. That was you couldn’t dim you vacuum or coffee maker….