Little Armies, the Eureka SYW range horses are quite large in stature, as you know. The Eureka WSS range is smaller than the SYW in size, but still on the larger side.
I'm comparing some horses on my desk right now. I'd say the WSS horses, and the men, are just slightly larger than Old Glory, Legio Heroica, and the Khurusan horses, if you own any of those. They would mix well on the same table. Whether they could be mixed in the same unit might be a matter of personal preference.
I would not mix the Eureka WSS infantry with the Khurusan infantry. The stature of the Eureka infantry figures is much larger than the more slightly built Khurusan infantry.
That being said, I'm currently painting up the Catalonians and some Spanish from Eureka as Imagination armies for Sharp Practice 2. The Eureka figures are gorgeous. I'm hoping they will expand the Spanish listings in the near future.
Personally, if I was doing the WSS on purpose, I'd probably go with the Khurusan figures. They are quite wonderful, and the line is much more extensive than the current Eureka catalog.
If the cost of shipping should prove to be too prohibitive, The Lancashire WSS line is adorable, and easily obtained from within the UK. I really, really like them.
