In my experience, the RIP will use a certain icc profile: my wide-format RIP likes icc profiles which use the Lab profile connection space or PCS. So I had to find a way to create icc profiles using the ES-1000 and Fiery's Color Profile Suite and then change the PCS inside the icc profile from XYZ to Lab. This I can do. So once I create the best icc profile using Fiery's Color Profile which has a XYZ pcs, I then use another software package called ColorThink Pro. ColorThink Pro is used to diagnose and evaluate icc profiles, but it can also build device link icc profiles and a few other things. I gave it a try and managed to get XYZ converted to Lab for the icc profile which I can then use in my wide-format RIP.
So to answer your question, if your ES-1000 is licensed on the same machine and OS as your Fiery Color Profile suite, then you should be able to use the ES-1000 to create a icc profile for any device. If the RIP you want to install the icc profile rejects it, check the reason for it and it may be to do with the icc profile not having the correct colour channels, eg. CMYK, RGB, etc. or it may be to do with the pcs.