I've found that I've been bumped or brushed into when in an even seat enough times (or have to make a constant effort to avoid stretching my legs out) to the point where I would book away if those were all that were left. I suppose I might grudgingly forgo a nice odd-row window, for an odd-row center on a non-stop.

I'll concede that I haven't noticed the difference during the period of time when I'm asleep.