I've met a few. My prefs for spelling for this are
Candace and
Candis. I've met gals w/ both of these spellings and also
Candice and
Kandace. All prn'd Can-dis or close to it w/ stress on 1st syl. A few went by
Candy, but didn't have many of them doing that.
I like it. The personalities seem to vary, but the image is usually kinda friendly and bright. I think it's still usable now.