Board Thread:Wiki Discussions/@comment-1514283-20140911040828/@comment-1514283-20140911154324

The reason I'm asking for a Kekkei Mōra template is because, as far as we know, TSB is just that. The technique has been around for 50 chapters now and has seen heavy use, and yet we haven't seen any jutsu related to it, which leads me to think, that as the highest known type of jutsu, that TSB is end all, be all. It's just that malleable.

& confusing as the manga gets, we do know that Obito retained his TSB after extraction, which would suggest that once it's been achieved, it's permanent.