I have some of these for my Alamo games. The Mexicans are very small in comparison to the Artizan and Old Glory Alamo figures.This is particularly true of the newer releases like the Cazadores which are tiny as are the soldados in fatigue uniforms.
The Texians will be fine mixed in with Foundry/Artizan etc. Be careful some of the poses are a little awkward, and look unnatural but generally they are nice figures.