Does what it is supposed to do.
However, there are a few issues with it:
1) This addon is not 100% reliable. Sometimes unloaded tab will only have its tab name, but no address - it becomes blank if you will try to load it, so it is unrecoverable unless you can find that specific tab through its name yourself.
2) It lacks in my view a must have option of being able to protect specific tabs from being unloaded, accessible by right clicking on the tab. Pre-Quantum addon I was using had such an option.