IMC, I'd say (in response to any player questions) that they are unable to find any reliable research on how the item works, but they're welcome to be the pioneers in such research. I'd then make rulings on the fly, based on how cool I thought it was. I'd remind players that magic like this is tricky and weird, and something that works in one circumstance may not work in another for reasons difficult to detect.
In other words, I'd jealously guard my right to approve stuff that's fun and veto stuff that's dreary.
Daniel