Back in the mists of time I explored getting the most out of citadels Estallian arquebusiers to use as Spaniards for dutch revolt games (which is what they essentially are thanks to the lovely Perry bros). In this post I took a saw to the two guys on the left and centre of this photo. I do however have just as many copies of the dude on the right. I need to pull my finger out and figure how to spread the head swapping love.
Going back to the start, you can see that the citadel guys mix well with Foundry figures (far left) and Gamezone (far right). So that gives me a lot more flexibility with choice of figure.