Charleston, SC FO Same-Day Oath Ceremony?

I read here in the FAQs that some field offices may offer same-day oath ceremonies. I was wondering if anyone has been able to do this at the Charleston field office any time recently? The FAQ said they may do it if you ask and if they’re not particularly busy that day. My husband has his interview coming up and I told him it wouldn’t hurt to at least ask, but was wondering if anyone here had any experience with this?