There is no reason at all to stick with a server that most likely has been created by someone at tibiaking now when we have the latest protocol.
1.1 was released last night, and unless you talk bullshit (
https://github.com/otland/forgottenserver/releases/tag/v1.1) "This is the second stable release of The Forgotten Server in the 1.x series.".
There is as I said no reason at all to update, everyone has used 1.1 and there hasen't been any major bugs imo.
The only reason to actually stay with 1.0 is if he dosen't know how to use the tibia king otb and started using it since the protocol update took so long.
And 1.1 has been stable for me so atleast I see no reason to use 1.0 and I am not alone with that.