A first for us to see red gooseberries, and that pie looks delicious. Our gooseberries are yellow and they are called Cape Gooseberries, sweet and sour tastes. We had a look on Wikipedia why they are called Cape Gooseberries and its origin, and we were mightily surprised. See for yourself: https://en.wikipedia.org/wiki/Physalis_peruviana
In any case the wife reckons that she will follow your recipe, only with yellow gooseberries instead of reds.
Maybe we can even make a !PIZZA topped with the berries :)