If I'm just "riding around", I use the front brake only and use the rear just to supplement. But, if I'm riding curvey roads, that scenario changes...I will only use the front before I enter the curve, and if I need to apply any brake while in the turn, I use a trailing rear brake method...applied gingerly. But, I rarely need to do braking in a turn...I try and do all the slowing well before I even lean the bike over, have already downshifted, and enter the curve with partial throttle so the bike is as stable as it can be, then accelerate immediately after the apex and out.
But, I'm old school. I keep two fingers on the front brake lever 80% of the time (I've been told they don't teach that anymore in the riding courses), if I even THINK I might need to brake, and the position of my hwy peg is such that I can put the toe of my boot on the right peg arm and it is on the same plane as the rear brake pad, so all I have to do is pivot my foot and I'm on the rear brake. That's when I'm riding "agressively" and there's a good chance I'll need the rear brake, or I'm approaching a potentially dangerous situation where some cage might do something stupid.