In general, Razor is fairly safe to use on OSI.
There is deffinently a chance you'll get caught. My recommendation to you is:
Always use the latest Razor version, Never use any razor features that behave oddly (such as macro walking commands). NEVER page a GM with Razor running. Redownload and reinstall razor now.
If you do these things, you may never get caught. A whole lot of people use razor on OSI without getting caught. But, of course, so people do get caught and banned. So its a risk, of course.