As one who actually USES a hard nose bar, I think I have 3 different bars, I will say they definately have a place. I prefer a hardnose in sandy gritty cutting conditions since it will last much longer than any sprocket nose bar. A sprocket nose will pick up grit, slow down the chain and cause the bar chain and saw to heat up. The tip will split way before it should and stop the entire job. On the other hand I can leave the hardnose bar on the saw and hardly notice a change between it and a sprocket nose when cutting "regular" wood.
The hardnose bar is another tool in the toolbox. Use it when you need to.
The hardnose bar is another tool in the toolbox. Use it when you need to.