May be the pessimist in me, but I would expect them to be bad. The opposite would surprise me.was surprised how bad most of them were.
I have been toying with the concept of low abv sours in hopes of adding complexity to make up for body. Though I am rather inexperienced with sours having one kettle-sour faux berliner weiss. It ended up about 6% but I think I could reasonably cut it down to 3.5-4%. Maybe with time I could work it down to under 3%