The P53/74 and P76 bayonet has no edges, its a purely a triangular lunging stabbing weapon. (you cannot stitch a triangular wound). The object of the bayonet in defence is the same as a porcupine, multi directional points.
Bayonet drill, was a huge part of a Victorian army repetition training, with special "drill arms", sprung loaded dummy rifles to offer the same resistive properties of human flesh. It was introduced as Musket, Spring Bayonet LOC 807 16.6.1863, and LOC 1605 18.10.1867. Many Martini's were converted to Drill trainers in the late C19th.
Testimony to the effectiveness of bayonet drill can be found in the use of the weapon in both offensive and defensive role, and many visitors to the site could do no better than further reading of contemporary campaigns, using the same weapon system. Afghanistan, Egypt, Sudan & Asia. I do not offer "what ifs," where no primary source is available or lived to tell the tail, but draw conclusions by typical actions of its type, i.e native forces armed with a variety of obsolete firearms & edged weopons.
Offensive: Tel El Kebir 1881, & Khandahar 1880.
Defenesive: Abu Klea, Tofrek and Rorkes Drift.