Are two small subs each side of sofa a good idea?

Are two small subs each side of sofa a good idea?
To avoid cancellation in the upper sub range when sitting on either side of the sofa, centering the subs behind or in front of the sofa would be a better idea.
And they can be disguised as small tables
Two subs in front of the sofa could have opposing drivers, cancelling most of the vibration force that could rattle drinks off single sub table.
 
To avoid cancellation in the upper sub range when sitting on either side of the sofa, centering the subs behind or in front of the sofa would be a better idea.
@weltersys,
Do you think it would be even better to have four of 6.5 inch sealed subs in a 3 feet array place below the sofa? Then no matter where the listener sits on the sofa, he/she will be within the array, also totally invisible, greater WAF.
 
I keep bass close to the other sources now.
But only one way to find out.

I have had 2 subs to the sides of couches and subs behind the couch, depends on the room.
I would say I slightly liked sub behind the couch better.

It is not special, aside from when watching movies, the subs are louder being closer.
Rumbles your butt a little.
I entertain people at the house and didnt like music with the subs near the couch standing in other places.
I keep everything near all sources.

Unless you spin in violent circles next to your TV and really really need that space nobody uses.
I just put the subs to the sides, one for right one for left.