I haven't seen to many posts on this style of music... I just got back from six weeks San Antonio where I was playing at daily Church services at a Spanish Language school... I can't say that mi espanol es bueno, but I definitely got better on playing the mando this summer.
Most of the music was in the the Tejano or Cojunto style, and my Rigel A+ really shined in this style of music... It is a great, GREAT rhythm instrument for Tejano stuff. I was just playing chords, and the Mando sounded wonderful with all the nylon stringed instruments. Really cut through the mix. Most of the other musicos were Mexican American and said that they hadn't heard a mando in this context before. By the end of the semester, they were combing the pawn shops for mandos! (I was looking for a bajo sexto....)
Anyway, I just wanted to post this to encourage anyone who plays this style of music to keep it up. I found the musicians to be quite welcoming of a mandolin in the mix and were very intrigued by its possiblities.