What exactly is distracting about Lorem Ipsum? I've never found it distracting, and I've always found it super useful for mocking up layouts that have responsive designs to see how the text moves around.
When using a filler text, it takes a conscious effort to not read it when glancing through the page and instead try and perceive the filler as a layout filler. So it only makes sense to replace the recognizable glyphs with meaningless scribbles and eliminate that effort.
When you look at the page with text when it's done, you're going to be focusing on the text too. Judging the page in a more realistic scenario makes sense.
This is the crux - focusing on the client's perspective. At the wireframe stage the important issue is conveying a general structure. I've also had people get lost in the "but why did you put Latin?" rabbit hole.
