Hi Ralph,
This is a good question but is unrelated to Policy Xpress. From PX standpiont you simply need the etautil executable available anywhere in the path (of the operating system) and simply call it via command line. In fact from PX standpoint etautil is not the issue, PX simply invokes a command line interface and any batch or script that you can launch from the command line is available this way from PX.
The real question, as you pointed out is what are the dependencies of etautil, what DLLs, Lib files or other files it needs to run and how we get them in place. I understand that is what you asked in the first place - my upper narrative is only in the context of this post. About what you're asking: Unfortunately I don't know. I would believe you need to install the provisioning components to guarantee all these utilities are available along with their dependencies in an appropriate fashion. For instance, perhaps some of the dependent DLLs are COM objects which needs to be registered in the Windows registry. We don't see etautil separately then the rest of the utilities. We provide them as a package deal and so while I don't know the answer , if I were you I would recommend you do install the utilities as a package , this probably will be the safest way to get it to work. If you were to explore the dependencies yourself then you may end up working hard to find them , then understand their own requirements of registration, location and their own possible dependencies. I would not suggest you go down this path. So, my recommendation - yes, install.
Sagi