Seems I found an even better way to show the container elements in the debugger: just add a watch for the address of the std::vector instance!
std::vector <> oList;
oList.push_back( -1 );
oList.push_back( 6 );
__asm int 3 /// Breakpoint here...
Add a watch for :
And it expands to (correctly sizing it!)
oList[ 0 ] = -1;
oList[ 1 ] = 6;