So this doesn't make the soundstage laterally narrower??
If you mean the quality of the perceived image, this is a good trade-off.
Ideally, you'd be listening in a much wider room, allowing you to point the tweeters straight ahead, and you could listen in between them, but if the room is your problem, this is a possible compromise.
However, if you mean the listening location, well, yeah, very much so, but you are in a narrow room anyway for you to consider this setup.