Airtronics Stylus
Yes, two elevator servos can be run with the Stylus using two channels. I fly a V-Tail Quickie 500 pylon racer. I use the B-Mix function mixing elevator and rudder.
If you don't have a V-Tail but just want individual elevator servos, it can be done as well. Likely just another mixer as indicated by visioneer_one
PS. Stylus is the best kept secret in RC......... shhhhhhhh !
R. Smith