I am just finishing my kitchen remodel and I used Wiremold and led bar lights from Environmental Lights so there are no outlets on the wall. Mosiac tile backsplash behind the sink and back-painted glass everywhere else. The glass is still be fabricated, but I can tell you it cost 50% more then the tile would have (which came out to about $800 more in my case since we were covering 45sf of wall), so you have to consider that the backsplash is more likely to break the bank than the undercabinet options you are looking at. I also recessed the bottom of my cabinets 1.5" to be sure that I wouldn't see the plugmold when sitting at the peninsula opposite the sink wall. Photo below so you can see.
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This company is Lutron certified. They may be a good contact for kitchen lighting and/or doing programming for our current Lutron GrafikT switches.
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