There are applications however; that are perfect for LED lighting:
TASK LIGHTING
AMBIENT LIGHTING
STEP LIGHTING
ACCENT LIGHTING
It has been my experience that LED performs well when the surface it is lighting is less than 2' from the source. All of these applications fit that description.
There is no arguing the benefits of lighting that has little to no maintenance costs, especially in commerical applications. The initial costs of these "systems" will continue to go down as production catches up to the technology. One great example of proper LED application is the Personal Lighting System by Finelite. This system is a combination of under cabinet lighting and desk top task lighting.

If you would like to learn more about LED lighting in general or the Personal Lighting System by Finelite specifically, comment or email me.
Best regards,
Mark Cloud, LC