10 does, 9 can use it, but you need to code the spawn list. Garrysmod.org
^^^that is the download.
If you are a 9 user, extract the materials and models folders to Program Files\Steam \steamapps \SourceMods \gmod9, then open one of your spawn lists that is in Program Files \Steam \steamapps \SourceMods \gmod9\settings\menu_props, and add this line
"#ODST" "models/thespectator/od.mdl"
Gmod is making ODST models now?
10 does, 9 can use it, but you need to code the spawn list.
Garrysmod.org
^^^that is the download.
If you are a 9 user, extract the materials and models folders to Program Files\Steam \steamapps \SourceMods \gmod9, then open one of your spawn lists that is in Program Files \Steam \steamapps \SourceMods \gmod9\settings\menu_props, and add this line
"#ODST" "models/thespectator/od.mdl"
and you're done.