I just gave it a try - works great

One request if you fancy it:
I don't bother to have snaps of clones, if they are the same as the parent - eg 1942 (set 1), 1942 (set 2), 1942 (set 3) are all visually the same (more or less). In fact, I dislike having different snaps for each clone. Of course some clones are worth having the different shot, if there are Japanese clones with different title screens or whatever...
Anyway, it would be great if there were a tickbox or something that would allow you to get it to ignore missing clone images, if the parent's image is there. So my 1500odd missing snaps would be greatly reduced!
What do you think?