IMO,
Any attempts at trying to dim either a CFL or an LED lamp, would be pretty much fruit-less.
Reason I say that is because, look at the way that this technology works.
A Compact fluorescent lamp is just a smaller version of a 3-4-5-6ft linear tube.
If you reduce the voltage through that tube, the arc that keeps the lamp lit will fail, hence darkness.
On the same side of the coin, an LED is purely a P-N junction that requires a certain "bias" voltage to keep it lit, go under that, you get the same result as above.
The only way you are going to achieve actual "dimming", is to turn off individual LED's or parts of a CFL.
With current lamp-holder technology, that won't be happening any time soon.
