You can install a local database, copied from you enterprise server, and set up an environment to run entirely local. The only time you need to connect to OneWorld Deploymeny or Enterprise Server is when you want to check-in or check-out.
There's a few other things to watch, to do with next id's, and checking out larger chunks of these at a time than the standard JDE setting.
I haven't done this for ages, but there must be someone about with more recent experience???
I know of at least one consulting company in the UK that sells themselves on their ability to do this.