I am using this plugin on one of my site. And there it is working like a charm. Very easy to install, fully customizable and above all other attractive aspects, the support is very proactive. The support for this plugin has really helped me out of an ensuing issue I was having with one of the component, although the issue was not with sigplus, and was with a conflict with some other component, but the support not only showed their interest in resolving the issue on their earliest with me, but they also kept me informed from results gleaned out from their test environment from time to time, and eventually I was able to eradicate the issue in other component with support.
Well If you are looking for a plugin that can easily be installed on a site with no real fuss, and can display photo gallery in an article in a most configurable fashion, than I would strongly recommend this plugin!!
Regards & Best Wishes!!