Seems to be a no go with st3, though not sure why.
Installed via package control.
Enabled the path to Tortoise Git via user settings enough though install location is standard.
Commands appear on the context menu, but are always greyed out. The directory is a git project and tortoise works via the shell and in PyScripter (which simply exposes the shell context menu).
I also have the sidebar extras installed. Any possibility of a conflict?
Should I go back and try on st2?