The simple answer no s off means open boot loader try doing that without s off your gonna hopefully get an error messege and that's it or your gonna brick your phone you cantbflash a custom recovery image without s off
No recovery image no custom rom
INSPIRE AOKP ICE COLD SANDWICH ROM
Thanks for the FYI on this. I was looking to flash Harmonia as a replacement if the stock, rooted rom didn't perform as expected. Now I know I have to go a step further to get the performance I need.