i'd be pretty ticked off at the mismatching spoke. i don't think that is very professional. at least they could've gave a heads up.

reminds me of the time i took my bike in for a flat - i felt like giving this shop some business because they worked on my bike previously and the owners were cool. of course, i can get a tube and do it myself but i wanted to support the shop and they charge a fair price. anyway, i get my bike back at the end of the day and find that they drilled through my presta rim to fit a schraeder valve. later the same day i flatted again and changed it myself and found that they didn't install the correct sized tube. not letting that shop touch any of my bikes ever again.