The user experience really important. If the users experience of the product is bad it does not matter how good the usability are. The usability is included in the user experience. But there are some possibilities to hide a part of the usability with the user experience.
For example on the experience lecture if we compare the quad and the electric wheelchair. I experience that the quads user experience was a lot better then en electric wheelchairs user experience. The quad was fun and I felt that i can go anywhere, and I felt that the quad had a better usability and user experience. But when i think about it, the electric wheelchair have a better usability because it was possible to go where the quad went but no as fast and not everywhere but almost. Are the quad able to go where the electric wheelchair goes? outside probably everywhere, except where it is to narrow. How about inside the school, can the quad go where the electric wheelchair goes? In very few places such as the entrance yes, but it would not be socially accepted. Everywhere else it to big, loud or to clumsy to go.
This is an example of how the user experience can triumph the usability.
Non-excluding Design 