I want to be lazy & finish a v neck with bias binding.

[lucysmam]

But it's not going to be very neat, is it compared to facings?

It cab be...Most shop bought things dont have proper facings nowadays.

Just remember both the binding and the neck edge are cut on the cross so will stretch.

should be fine, just watch you don't stretch the neck. I often substitue bias instead of facings, although not done it on a v neck.