Hi Steve,
We don't go there with PrintTool.
We have for years used an alternative shareware Crystal Distribution Expert (for Crystal Reports) that does the same as creating a runtime executable for the crystal report as a desktop icon. Although, I'm dating myself, this works similar to the runtime version of a report when Crystal was Quik Reports for Windows. So it in effect creates a compiled runtime version of a crystal report. This works for XP, W7 but we have not tested on W8.1. We don't see why it wouldn't work.
This doesn't function as a CustomRP, but can work for the functions that you are describing by putting the necessary reports for specific users in a folder for all to use on specific user desktops.
We showed this years ago at AOC, and although I think the link for this shareware has disappeared, we still have a copy of the install that we can send to you. All of our clients using Crystal, use some elements of this useful utility.
Best,
Brian