You will want to stick to the same brand for the centre channel. There would be a noticeable timbral mismatch in the front soundstage. However, for best possible off axis out of horizontal array comes from well engineered WM^TW designs but they still won't match the far off-axis listening of a vertical speaker.

I’m armed and I’m drinking. You don’t want to listen to advice from me, amigo.

-Max Payne