Joining two sororities?

[wilash]

Hello all,

I am interested in pledging an NPHC organization sometime in the future. A couple of my friends are in a greek community service fraternity where they call each other bruhs and have hand signs. I have seen on online sites that these organizations are sort of looked down upon because they are not actually a "greek" organization as most know it. Would it be wise to not join this greek community if I plan on joining an actual NPHC sorority?

-Anja-