Over the years i've owned examples of most 'vintage' AWI ranges but these chaps have always eluded me, indeed i've never even seen a listing of the range. This is a review from Battle November 1976. It looks like they might have been compatible with Hinchliffe, Tradition, Garrison, etc. (being slim with decent anatomy), and the choice of subjects was interesting (officers with spontoons no less, and a fifer), so i'd still like to get my hands on some.
Unfortunately the current Warrior AWI range are relatively recent designs in the modern style.