The Grand Duchy of Warsaw set has two very nice vivandiers. Perhaps it wouldn't matter if they were a bit oversize? It's not clear if he posts outside the U.K. though.

Some of these figures can be found on the Speira site but they're not Speira figures. Has anyone bought them in conjunction with the Speira figures and can tell us how they match.

These are from David Varquez its a kickstarter project. You can buy stl files for the figures, they are totaly rescaleable from 6mm up to 54mm