Setting up dipole/bipole surround speakers for a 7.1 system?

Question

If I buy 4 dipole/bipole surround speakers for a 7.1 system, would it be OK and even better to set the ones I will use as side speakers to dipole and set the ones I will use as rear speakers to bipole?

On one hand, considering one pair would work out of phase whereas the other would work in phase, do you think that this would be a problem? On the other hand, considering the below link, do you think this would be the best setup?

http://www.polkaudio.com/education/showanswer.php?question_num=45

If you have first hand experience, I will appreciate it.

Answer 1

I would buy two bipole for the side surrounds and two direct radiating speakers for the rear channel speakers.  

Bipole gives a diffused sound (but placement is key) and that's what you want on side surrounds, but with the rear channels you don't want a diffuse sound since most movies in 7.1 are engineered to have a direct sound and not diffuse.

Here's an example, the shootout scene on the rooftop in the "Matrix"  you hear the agents gun go off from the front speakers, time slows down (bullet time) you want a diffuse sound as you hear the bullet whizzing by you, because the sound will appear to travel along the walls from front to back, but when it reaches the back channel speakers, you want to hear the bullet directly behind you and not appear to travel all along the back wall.

Hence why you want bipole on the sides and direct firing on the back wall.