Jeff, While I think of this as an edge quench, technically, I only heated the edge to critical and fully submerged the blade. I do this on smaller blades often but not always. When I can use that visible line to enhance or compliment the shape of the blade, I will. I have practiced this technique a lot and have rejected a few that didn't look right, or used another technique altogether as long as it didn't detract from it.
When I say I have practiced, I mean not only in the look but also in the heat control. I use a torch with a brazing tip. I'm careful not to heat the area to harden up into the grain growth temps and thus undo the benefits of my, already done, thermo cycling.