I am really looking forward to these guys. Lovely figures, good number of poses.
I think Peter is right, at least some of them will be suitable for wide range of sites and periods.
As AP says one cant have too many irregulars and the beauty of not having a regular uniform is that we don't end up worrying that we have the wrong water bottle. To my untutored eye this look works right across North Africa, Arabian Peninsular and down into East Africa. I think it would not be wrong into Persian and Baluchistan.
The idea of having comrades on horse is almost too much to hope.