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If you use a 25mm round base you can mount several 6mm figures on it but treat is as a single figure, thus you are still able to skirmish but on a budget.
A word of caution, I bought a few packs of GM's F&IW figures to play skirmish games with Malamute; but now my F&IW collection is one of my largest 'completed' projects. GM figures are very characterful and a joy to paint.You've been warned.