I find sentences like these particularly helpful.
Yes, this kind of sentence reinforces the differences between capital and small letters, and "'" (apostrophe.) Remember that in the Klingon alphabet, these are all different letters, with different symbols.
I can barely wait for the alpha version, if only to hear the difference between "q," and "Q."
Just a small note on terminology: "alpha" comes before "beta" and was the version that was even more unfinished.