The problem is, using 3 QS's for mains is a little illogical because for one, they will almost have NO direction to them. So, there is really no point to having 3, because if you use 3 speakers in the front you position them so you can
get direction in the front.
The QS's are meant for one thing: diffuse surround sound. The sound is meant to be bounced off walls before it reaches your ear.
With the omnistats, they do something similar, but much of their sound is direct.
For front speakers, you are going to want direct radiating speakers. Even if your seating position is off to the side, that really won't affect how you hear the sound as long as you aren't at a very sharp angle.
Although, the best thing would be to recommend your friend to put some mood lighting and music on when his wife comes home, and give her a nice foot massage/back rub and tell her how much he wants the seating to be around the TV. I mean, can't a man have at least one room of the house?