I don't want to be "that guy", but spears are actually thrusting, not chopping, weapons.
oh, i forgot to mention, the forward attack thrusts. since energy blades cut in any direction, it only makes sense that swinging it would still work, but obviously be less effective due to the smaller blade. and don't worry about being "that guy". if weren't for "that guy", people like me would forget to mention the most basic parts of their ideas.
I guess the blade is curved in one direction, so it's kind of a glaive, so it could indeed work to slash.