Good Evening,
You are correct the 2002, 2005 and 2008 National Electrical Code forbids dimming split outlets in section 404.14. However I could not find it in the 1993 NEC (I do not have all of them). I contacted the inspector and asked what code they use. They use the state Residential Code which does not prohibit dimming. Consequently what I have is legal and to code in this state.
On a side note the inspector is an honest man and does not drink, so I do not know where you got that from. Maybe you can buy them off where you live but here it gets you time.
I did a bit of research and there is a lot about that particular section of code, promoted by Lutron. A bit of further research shows they have a patent on there system consequently there will not be another brand that is interchangeable. They also got the UL approval and limited to only there dimmer. Hmmmm I wonder why?
Any idea how 404.14 became part of the code and who promoted it?
As far as plugging in laptops, little bricks etc they may or may not work. If they are UL or CSA approved (they should be) there will be no fire or anything like that although they may get hot and blow there thermal protection.
It is important to also check local regulations as well. A lot of communities do not subscribe to the NEC, some are much more stringent some are more lenient but that varies by section.
Have Fun
Gil Shultz