BTW, that particular calculator model is amazing. I used one in a very dust heavy shop environment maybe a hundred times a day for 15 years and I never had any kind of problem with it. They also only cost ~$12.
Just treat them with respect like anyone else. There are 3 topics to avoid in any work place for anyone: religion, politics, and sex life. That's just a good general rule for all forced mixed company situations.
My biggest problem with it is that the updates are always kinda late hitting AUR.