We are truly NTNP, and we do it pretty much every day because we enjoy it/have high drives. In my mind (and granted, I could be wrong), but in my mind I don't see how it would hurt, just because even if they're "lower quality" it seems like the "you only need one" mentality added to the "perfect window" mentality would even out ;-) But, that said, that's from someone who is NTNP straight-up, if that makes sense.