I went to Inox last week.
My brief take: if you liked 2941, you will like Inox.
Location: For people from DC, the move from 2941 is an improvement over going farther into Virginia. On the other hand, getting to an early reservation on a weeknight might be a problem because of traffic around Tysons Corner.
Space: The space is not as grand as 2941, but the smaller space is elegant, modern, muted, and very comfortable. (The smaller space may also have helped with service.)
Service: In my experience, 2941 had very good service, but it was sometimes hard to track down someone if there was a problem. That is not a problem here. Service was attentive without being invasive.
Food: I had the tasting menu. Every dish I had was well seasoned and quite delicious. I don't know who was on the meat station when i went, but that course in particular was perfectly cooked and seasoned. Again, if you liked 2941, there is little going on at Inox that will disappoint. Also, don't eat too much of the wonderful bread - the dessert(s) were absolutely fabulous.
Wine: The wine pairings were all appropriate and we never had to wait for the correct wine to be served (which happened fairly often at 2941). Also, none of the pairings were off the wall, as sometimes occurred at 2941.
Pricing: I think the pricing is appropriate compared to other restaurants like this in the DC market and what is delivered in food and service.
Other: One problem is the sound system, which seems to go in and out. In addition, sound of the music selection did not match well with the atmosphere of the restaurant. But this is a minor quibble and it never interfered with the meal.
Overall: For a newly opened restaurant, I thought that Inox is doing very well. I look forward to seeing how it develops.