http://www.sebikes.com/Singlespeed/D...Gear-2010.aspx
You're safe. Most SS/FG's have the flip flop hub, few don't have the freewheel installed. To me any SS/FG should come standard with flip flop hub, both freewheel and fixed gear with front and rear brakes. Let the buyer determine what mode and whether brakes stay on it ?