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Hopefully this isn't too off topic, but does any one have any experience with Egan Visual boards (http://www.egan.com/#!home/mainPage)? These are boards that can be used both as whiteboards and as projection surfaces. All of the art history classrooms on my campus are being redone, and there as been discussion of installing Egan Visual boards in the new classrooms. Some faculty are concerned that since they double as whiteboards, the quality of the surface will deteriorate over time (with repeated erasing) and/or images will not project on them as well as on a traditional screen. 

Thanks for any experiences/anecdotes/advice.

Best,