Below is a picture of a W3 installed here, they do not protrude that far from the wall. For the cost of return shipping, you could try a pair and see how you like them. I tested the W3s here before installing them, the sound only improved once installed. So in my opinion you can get the feel for them without installing them, they will only sound better installed, not worse.
You can do a search as I have made several posts as to how I like the W3s, and there are some pics of the installation as well. Good luck on whatever you decide to do.
W3 installed 
