I don't have a 'blad. I use front mounted lenses on Graphics and on a Cambo. On a Speed Graphic, a front-mounted lens is used like a lens in shutter. Open back shutter, use the front shutter. On a Crown/Century Graphic or a view camera, a lens hung in front of a shutter is also used just like a lens in shutter.
Apropos of 'blads, I've never felt the need for one. I use a 38/4.5 Biogon in Copal #0 on a Century Graphic, shoot from tripod and work slowly so don't need an SLR with other focal lengths.
Adapters? By SKGrimes.