In fact I do believe they are . . . At least in their early stages . . . The size of the dropplet and/or ice nuclei is different. . . I believe smaller. . . I don't have the cite for this right now but I am pretty sure that is in the research. . . . If I remember correctly that is one of the reasons they more easily demonstrate visibility, persistence and cloud formation and is why they have greater RF than normal at least in their early stages. . .
Hehe, even if you do find a "cite" for it....the claim that a larger droplet of water vapor isn't STILL water vapor is a bit strange.