With a DE or cartridge razor I understand the concept of beard reduction since without it you may clog the razor and pull hair but with a straight I will often do a ATG pass right off. With a good sharp razor and good technique I haven't had any problems or draw backs. I wouldn't recommend this to a beginner though. I think it is easier to have problems with ATG right away if your technique isn't up to par but as an advanced technique, again, I haven't had any problems. Some will do a 1 multi directional pass but I think just starting out I would say take your time.