The problem with bending using the expression pedal is, a sax can bend BOTH ways. And you want the expression pedal to make phrases tail away, or swell...

There simply is no easy way round the problem unless you are content to let the machine decide for you where and when the 'tricks' are going to happen.

I am pretty confident I have never heard a convincing SA sax part that wasn't done after the backing was laid down, and probably edited in a sequencer, as well. If you listen to the factory demos, it is MORE than obvious...