command line options vs. snmp.conf

The output formatting options that I specify on the command line do not
appear to override the options found in my ~/.snmp/snmp.conf file. Assuming
this is the expected behavior, is it really what's intended? I would think
that the command line options should have the last say.

The documentation describes both ways to specify output formatting options
but doesn't really say which one takes precedence. For example,
snmp.conffile contains the following:

defVersion 1
defCommunity public
oidOutputFormat 1

I can override the version and community string on the command line using -v
and -c. But the oidOutputFormat is always used even if I specify -Of on the
command line. In contrast, if I remove oidOutputFormat from my
snmp.conffile and specify both -Of and -Os on the command-line, the
"last" option
always takes precedence. Shouldn't this also apply to options read from the
snmp.conf file?