I messed around with it for an evening before moving to another build (can't wait for loadouts to be fixed!) and I really enjoyed it. I paired it with Winter's Guile for some crazy numbers. ~590k on a red bar! I did it on Strand with the new aspect, so I had woven mail up and full melee energy (because you mainly use the bayonet anyway) to have an escape card for when you get a bit too in the fray of things.
My only issue is chaining kills with it. If you get a bayonet kill, it gives you five stacks of Markov Chain, allowing you to activate it again, which is great. It gets a bit tiring doing it over and over. I wish they'd change it so getting a kill with it simply extends it, and just doing damage with no kill resets it.
Why would you even buy this? Literally just buy a phone mount and use your phone. This thing was a textbook example of a useless product.