I have no problem with one tag per car, you are not really supposed to switch e-pass. I got mine when they first introduced it in early 2000 and the toll gates even had a reminder that switching of tags is not allowed. The tag is assigned to your car talaga.

My problem is the sticker. I won't be switching to a sticker because I happen to prefer my tag. It's inside my car and I hear a beap when I pass the toll. I don't like the idea of a sticker because it's easily damaged or stolen. For those who don't pass slex regularly, you wouldn't notice if your sticker is missing already.