Mix Spring Social Security with regular security?

I noticed that there is a spring social security project on github that is not maintained by spring and one that is maintained by spring but doesn't have any documentation. Are these the same?

The documentation that is available suggests that Spring Social Security can act as a replacement for normal "login/security" for a site. I use Spring as an alternative way to sign in/sign up, I imagine that most people use it that way. In this case, I would also like to do things like execute the LoginSuccessHandler etc.

So, can you use this integration in this way also? Are there any special considerations for this?

Kind regards,
Marc