Just curious about this one. I'm never sure what to say when I ask for chopsticks in Japanese. I know that "by-the-book", you can count them with ～そろい （揃い) or ～ぜん （膳）. So I always say 「お箸を 一揃い（ひとそろい）／一膳（いちぜん） お願いします。」 to ask for a pair. But as with other things I say in Japanese, I'm afraid that this sounds too "textbookish".
So I'm just wondering how native speakers ask for chopsticks (if they ever need to). Do they use these counters, or the basic ひとつ／ふたつ／．．． counters, or something completely different? I hate sounding too textbookish.