Captain,
Here's a try at it using Jeans method. I drew a quick "From Scratch" mesh and then used "Sculpt Tools" with lag line turned on and just drug across the mesh a couple times to get this result. Then I used the radial bend to grab from the middle of the bullnoses buldge to the edge of the radius and bent it down ninety degrees. Did the same for the other side.
In the second pic, I just used follow me to sweep a rectangle around a curve with pretty many segments, welded the inner lines to use as rails, then used TIG's EEbyRails to sweep the bullnose profile. That gave me enough subdivisions to run up and down the bullnosed edge with sculpt tools to mess it up a little. This method saved from having the polys where they aren't needed and will give more accuracy when doing rockfaced bullnose around radii.
Bullnose rockfaced.jpg
Bullnose rockfaced2.jpg