What key would this tuning be in? (Love Farewell)

Hey, I'm looking to eventually tackle this song. I've found two examples on youtube both with different, unusual banjo tunings

http://www.youtube.com/watch?v=FW1v_ceaNVU

tuning is listed as eDABD

http://www.youtube.com/watch?v=h-A_fRkVrXQ

tuning is listed as dCGAD

If I were to learn either version and play with another guitar player, what key would this put it in for them?

Thanks!