SG doesn't give direct control of midtones so you end up doing a lot of B&D in the mid-tone region. This isn't giving you control, it is forcing you to exert extra effort to control what SG can't.
Gosh, maybe I'm doing something wrong. The technique I learned, which came via Les McLean, exposes with the 00 filter until the midtones are as desired. Then, the 5 is used to get the popping contrast. Everyone's mileage may vary, but I've seldom found it necessary to do much B&D. Maybe some, but not very much.