PSOS concerns

I've been checking out PSOS but have yet to use it. I suppose any concerns about whether a file is local or hosted could be resolved with something along the lines of:

If(Get(HostName))

PSOS etc.

Else

Perform Script etc.

That way if a file isn't hosted the script would run locally.

However there doesn't seem to be a way to DeBug a PSOS designated script. Is it safe to say that if a script shows compatibility with Server (and all the contexts are made clear as required) that the script will run on the server? I've yet to do safe testing on a number of routines I believe would be better handled server side and am uncertain how to proceed.