Using aerial cc3 centers for rears ?

I am debating the merits of using 2 aerial cc3 center speakers for my rear (actually sides), I have aerial 7 b's in front and cc3 center, I have space restrictions on the sides. any comments on this setup ? thanks
What about using the Aerial LR3? I'm not sure how well it would work to have the CC3 placed vertically (if that is your intention) due to the tweeter orientation. Or you could use the model 6 for the rears.
thanks for response kwb, I have been looking locally (maryland) for a used pair of sr3's or 6's for some time now, I could get 2 cc3's at a reosonable price, I would use them in the horizonal position, hence my post, thanks