There isn’t definitive proof of cryogeysers on Europa so a mission involving that would never be selected for funding. But the clipper mission will have enough remote sensing instruments that we don’t really have to fly right through a plume to get a good idea of the conditions that exist - however a “true” sample of the conditions would need to come from the ocean beneath the icy crust because the process of cryovolcanism could possibly taint the sample you’re getting