When I was thinking about having mine done, my wife objected. Saying it would scream CROSSDRESSER!! I started looking around at how many men had pierced ears who were over 50. Not many, I did it anyway. My wife loved them. And no one ever questioned me about it. So a couple years later I have another hole put in both ears. And She loves that even more. I use to only wear studs or Huggies, ear rings made for men, but lately I've gone for a hanging stone or hoops. And no one ever questions it.
And because of my medications, my finger nails split, sometimes badly. So I have to get acrylics put on them. I got chuckles and giggles when I first would go in to have them done. Now it is no big deal. I've been doing my toes for years now, usually RED. Just recently I did my toes and my finger in red. Had one woman stop and ask, and told me that she been after her husband (who was standing with her) to have his done. Got that same story from a couple other women also.
So I agree, if you want to get your ears pierced and paint your nails, go for it. If your employer let the female staff have nail polish, they cannot say anything about yours.
I worked at a Cereal manufacture for a short time and ALL visible Jewelry was forbidden, except a small religious pendent worn on a small chain keep under your shirt. But that went for everyone. So if it's good for the girls, it's good for you.
Go for it.