Sounds interesting! I have an E-Bow and if it can work with the piezzo's, it's superb! And as for the feedback, the sound that the guys were getting with the Fender's feedback pedal can be made with the help of E-Bow from what I have personally tried. Plus to that, you can get this endless sustain and various types of sound from arpeggiated and spiccato to the different bowing techniques. One of the guitar additions that I am using all the time.

But make sure that you have the volume pedal available since it allows you to control the possible volume swells as you are looking for that sweet spot. Now I am wondering about playing in the models mode.

And off topic question: if I have a tremolo bar, then I can play even the acoustic guitar models with the tremolo and dive bombs? No? Hehe