If you want to deploy your owns services, the easiest is probably go for the full jar containing the CXF bundle and all dependencies. Sometimes (often), this can lead to some jar conflicts that may be difficult to solve.
In that case, you would probably prefer to go for the minimal jar and add yourself the dependencies.
If you are you are using maven, GroovyWS is available in the codehaus repositories
If you want to live on the edge, you can find the snapshot jar files here.