You can try it, I already know what's going to happen. I did a lot of work with aramid (Kevlar) and fiberglass composites in college. Kevlar in it dry (probably greig) form is an unholy pain to cut. I had to use recently sharpened shop shears, disposable razors, or ceramic scissors to cut it. That being said, it frayed incredible easily.

Kevlar offers good protection against hacking, some slicing, and ineffective against piercing tools. The fibers just spread out of the way when pierced. Add in a hard plate (remember a knight's plate armor?) and it’ll offer some protection against a piercing tool.

Look at the ratings and construction of various cut resistant gloves to get a better idea of what the soft armor is capable of in regards to protection against bladed weapons.