Fair enough...I prefer conforming for something like this. Geograft usually only works with the body texture it's made for, and with wings that's a bad idea.
I've been thinking about this issue and was wondering if anyone had created lie presets to help blend the geografts? If it was done in the same colour as the geograft it could ease the transition from the graft texture to the character texture....
The geograft does not share the UV map of the main body, it just blends with it at the edges. So you'd need a separate LIE preset for the body and the graft, and you'd have to blend them in the same way the original was made (probably in a 3d program). That's not impossible, but it's hard enough that the people who could do it are probably just making a body texture to go with their geografted piece.
With the horse wings I took into account the UVs so the seams were hidden under the feather that way I could use the textures from the horse and use them on the wings. I had tried several months before with geografting but could never get the textures to line up I even tried the Geo Shell but had no success, so conforming was what I went with.