I didnt mount it on a Tele, but on a lapsteel. The original chinese pick up was quite noisy and weak. I installed it myself, the instructions were very clear and easy to follow: despite being the first time to change a pick-up myself, it took around 20 minutes (a professional would do it in half of the time...).
The sound is what expected: noiseless, and with good definition, but at the same time full, especially with moderate distortion it makes the difference. Quite happy about it!
Up to now, no cons