I have included the new data from Pagani et al. (2012) together with various other East African datasets available to me, including various East African Dodecad Project participants.
The first four PCA dimensions can be seen below:
Project participants can find their co-ordinates in the first four dimensions below:
I have also run MCLUST over the first 4 dimensions, which resulted in 12 clusters inferred:
All Project participants fall in the expected clusters, so there is no need to report any individual clustering results.