I voted for "I'm not sure yet" merely because I think it will take another week or two for everyone to stop shitting themselves and get used to it. Until then, no one can really provide an unbiased answer. There are the old 2h stab abusers who immediately hate it and won't give it a chance, and there are the non-2h users who like it thinking it's a severe nerf. It might end up being just as strong/abusable as the old one, but it will take some time for people to adapt and develop new strategies (read: exploits) with it.
The way I see it, just like the "new" 1h stab, this is v0.1, and there will be revisions to come. Whether they are purely cosmetic or they impact the gameplay, that depends on what we observe in the coming weeks(s).