well, now I know better length of that stab and it helps a lot but i still think it needs better visibility, reach is bit better than 1h but it like to glance a lot on the end of animation also 1h stab is way faster and wins in fights of range and footwork.
dmg is low, stab is bit slow for it effective range
I like it more with every hour ingame
you can try to mess around with stab domg or with speed of it