I always use gasket cement on the inner timing cover (Three-Bond these days), because, this is one place you definitely don't want leaks, especially between the timing chest and tranny where you can't see, and it's a fairly major job to strip it down and re-seal.
I don't use gasket cement on the cylinder base. On the primary cover, rocker box cover, and sump plate, I cement the gasket only to the cover. That way, these covers can be removed and reinstalled many times without disturbing or replacing the gaskets.
'65(lower)/'66(upper, wheels, front end, controls)/'67(seat, exhaust, fuel tank, headlamp)/'70(frame) A65 Bitsa.