I don't think I've ever met someone who played this mode but I was in a thriving clan around 2008. Hosties was basically JB but with a few differences. Ts spawned in one big communal cell with a "rebel way" meaning everyone could rebel every round if they wanted. All Ts also spawned with deagles but to make sure every round wasn't a shit show there was a one-way transparent wall in front of T spawn for CTs to hide behind and most rounds started with the Ts lining up at this wall. Aside from that it was pretty much the same with map games, LR, etc.
Yes, I started out on Hosties on the i3D server! back when Stewie was the owner of i3D and use to play alot.