Working on that very idea at the moment! We will use our own Tales of Derring Do (TODD) rules, as they provide for Heroes, Leading Men, Supporting Characters and Extras, all of which seem to fit the skirmish approach to BoB.
As well as the 2 sets featured there are 5 or 6 more. Some of the figures are real characters. Given how few you need for a skirmish, £25 isn't really that much (compare with GW 28mm plastic for example). He's pretty much a one-man-band and isn't going to sell many sets of such specialist figures.
OWN Figures also have some sets which fit in - 2 sets of early WWII Chinese in German helmets; Japanese infantry in peaked caps (like the AIP set); Boxers (again like AIP).
AIP have numerous sets of suitable types - Indian Army, British (Colonial and WWI), Americans, Sailors, Russians, Japanese, Spanish (SAW in slouch hats and trousers w/o gaiters or puttees for some of the Warlord types with head swops), WWI Germans & French. They also both foot and mounted sets for many of these.
I have a number of books to work through (especially The Great Game). What I really need is some inspiration for some factions and individual characters to be involved in a Narrative Campaign. I guess I need to start with one group and then weave a storyline out from them to bring in the other factions.
Anybody know of an fiction set in the period/genre? DVDs?