5-beat 5/4 and 5/8 rhythms are rare. 5-beat rhythms appear in Turkish and Greek music, Moroccan Jajuka trance dances, East Indian music, and American Jazz. The related 10/8 rhythm is prevalent in Armenian music & line dances.
There's a dancer, Debora Newberg, in Santa Fe New Mexico who teaches a workshop:
4) Dancing with Odd Rhythms ~ Have fun dancing with Odd Rhythms! Main focus will be on Turkish 9/8 and 7/8, and we’ll also visit the Arabic 10/8 (Samai), the Armenian 10/8, Persian and Moroccan 6/8s and even 11/8 and 5/8!
There is also someone named Tayyar Akdeniz who teaches music and does folk tours in Turkey who evidently does a workshop that covers 5/8 rhythms.
So basically it looks like if you want to know about 5/8 rhythms in BD you should probably ask dancers or musicians who specialize in Greek and Turkish styles.