The thread title (until this particular post) has not really been updated over the years; however, generally speaking the software seems to have originated along this path of the original postings.
The version of the software available from github has not been uploaded to the ZC plugin section because the documentation to properly identify all of the capability has not been completed. It's ability exceeds any previous documentation for the use of SBA.
In relation to your question of operability, the github version does work in ZC 1.5.x. Please see previous postings about installation, but it is the main file folders (includes and admin) with associated merging/template placement and then installation of the file(s) from the ZC version associated with the store in question. (there is no need to install an older version then next version than next situation).
Once installed, you identify the combination of attributes that are considered in stock and based on the option name sequence for the attributes, selection of the first option name will identify what is in stock, if any, of the attributes in the next option name. There are postings not so long ago about populating attributes that are not stock based such as a gift wrap option or other uses as otherwise described. The default settings for installation support the maximum flexibility of usage. There are other configuration changes that can be made, but those have remained available because of the history of the overall software and some of the flexibility that is available when using those features.
Anyways, yes this software can offer/show the availability of an option value within an option name based on the selection of a previous option value within an option name. This is done through javascript primarily, so please be sure that your associated page(s) html validate before going to install this and troubleshoot why something may not work as expected.
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