At least, the first of the unpainted squadrons is finished. All it needs is basing. I'm using them in my Egyptian standard 4 chariot squadrons. Happily, the ones they are supplementing are also in 4 chariot squadrons.
My format is one chariot with a 'noble' archer to 3 chariots with a standard armoured archer.
'Harry's' chariots, 'S' Range Egyptians have the horses painted differently to mine, the crews are darker skinned and I've done mine with the archer firing forward. However, the chariot body seems to be the major influence and they are very similar.
Overall, they should fit in well. Only another couple of squadrons of these to go.