Works great. It has simple yet very useful functions.

The download button this add-on provides is really harmonize to vanila design and working speed is fast. Multiple videos download is available. NO redirecting to add-site .
Downloaded files are rename to Username + status ID (+01,02,...) . It is reasonable way to make finding videos easier on Exproler.
It is to be regretted that this page is not official as Mr.exercitus sais.

Single button under the tweet (same bar as the like, retweet and other buttons), automatically downloads the video file.
Perfect.