it's very difficult to have them resoled properly.
I lost a pair of good ol' Dragon velcros, due to a bad resoling.
the Solutions I've seen resoled seemed strange. I don't think the resolers are able to replicate the concavity. for what I've seen, I think they apply a normal flat sole, maybe very thick, and then they carve it, to recreate the concavity.
all the ones I've seen looked the same and seemed very very bulky and stiff, I think due to excessive rubber thickness in order to get the carving done without making holes in the sole.
I haven't resoled a pair of good shoes in ages.
I think it's not worth.