I use this product since this morning and I bought a little blindly finding no video and no opinion on the vibration sensor. Some people told me it spawn a horrible sound and feedback: Well I was right not to listen. I use it plugged into a mixer, but it should work in any combo amp. I plug a distortion pedal that allows me a lot closer to the sound of an electric guitar (a dirty well as punk and I love them). The sound is exellent, no feedback, I find that the sound is even better than when I put a microphone in front of my classic.
I find this sensor very good: good sound, good value for money, can color the sound with effects, etc..