No, no, no !
Reload won't add new domains etc.
It must be graceful !
"A reload is not sufficient as it does not reload the SSL certificates if there are changes there. Any new VirtualHosts, new domain, new subdoman, etc.. (even if they use the same certs) require a new read of the certs, and reload doesn't do this.
A restart is required... however, the graceful restart, mentioned above, can do a full restart without interruption of current connections."