I'm sure I read a rather good AAR of a game using that somewhere. It might be my imagination. I'll have a dig and see if I can find it.
I'm also quite keen on finding a good set of Colonial rules for 15mm, inspired largely by the release of Blue Moon's line and in anticipation of their Boxer Rebellion range due at some point. I rather like rules by Peter Pig, and the latest incarnation of their Square Bashing set also has lists for the Boxer Rebellion, so it might be worth looking at, although I reckon you'd probably have to adapt them for earlier forces etc.