Not a credible review of user experience or plugin value.
Out of the box it is perfectly fine even if you do not have beginner-level CSS skills. And it is about the only thing going for this type of function.
We added some beginner-level CSS and had this at 80% of the custom look we wanted. And with another bit of more advanced CSS (eg moving the buttons), we had a perfect design match with our site.
You must not have had a need for it if you couldn′t even give it a chance and tried to use it.
And that is no basis for a credible review.