No, if you have a stock system, you should be fine. We use this all the time with customers who are on 4.4.2 and need the downgrade. Doing it from 4.4.4 causes issues, so it's better to downgrade to 4.4.2 first if possible.
XDA Developers was founded by developers, for developers. It is now a valuable resource for people who want to make the most of their mobile devices, from customizing the look and feel to adding new functionality. Are you a developer?