The SCV organization is EXTREMELY close between the Cadet Corps and the A Corps. I would venture a guess that between 1/4 to 1/3 of the A corps members used to be Cadet Corps members...and this is across all sections.
This year alone 2 quads, 4 basses (I believe), 3 cymbals, and at least 2 snare drummers are SCVC alumns. Even on the road we're tight. Last season we almost always spent time together when we were at the same shows, and during finals week we practiced performed for each on Semis night. The mutual support and respect is really incredible. Jeff Fiedler spent time with and addressed all of us throughout the season, both individually and together as a full SCV organization.
SCV practices what they preach and are truly a family. Yes, there are surely some differences in approach, as that comes with different instructors, but the philosophy remains the same all the way through the organization. SCV truly wants their members to start with and stay with the corps from their beginnings until they age out.
While I cannot speak for the Blue Devils organization, I feel like there is a little bit more of a disconnect in SOME aspects, but certainly they look out for and try to help each other succeed as well.