I think by fitting the plaque somewhere other than the recommended place devalues the point of the plaque even further.
If I was going to look at a limited edition car and saw two cars with the limited edition plaque stuck somewhere and then a third with it stuck somewhere else I would start asking questions.
I wish VW would have made it as part of a recall type process and standardised the fitting of them. But then I guess on the other hand its our cars are we can fit it where we want.