AgPie, I dont't know as I have not yet used a 2stone. From the youtube videos, it looks like you can do NP in the 2stone. I can not do NP in my LBE yet. I'm still trying tho. The closest times is just shy of 2min. True NP will be baked in about 60-90 sec. Hybrid and NY style, yes.
I think if I was wanting to do NP, didn't have the space or funds for a WFO, or needed an easily mobile unit, the inferno would be worth the money. They look like awesome units. If you are selling pies, it would pay for itself in no time.