On www.lyx.org, I read: On screen, LyX looks like any word processor; its printed output - or richly cross-referenced PDF, just as readily produced - looks like nothing else. However, my experience is:
... its printed output - or richly cross-referenced PDF, just as readily produced - looks like any document typeset with LaTeX. Do we really assume the average LyX user did not see any LaTeX output yet?