Question about adopting the E5 Security add-on for M365 Business Premium: Is there a way back?

Hello everyone.

I run a small business and am responsible for system administration, including security. While I'm generally happy with the comprehensive security package included in Microsoft 365 Business Premium, I want to try E5 Security because I noticed that I can only use one group in Endpoint Security (Defender). When I attempt to switch the license from Defender for Business to Defender for Endpoint P2 in the Defender portal, I receive a warning that I can never revert to Defender for Business. Obviously, if it literally states that I can't go back, that's the end of the line, but I would like to try it if possible and revert if necessary. Bottom line, in the worst-case scenario, everything I configured in the Defender portal will be wiped, and I don't mind re-enrolling the devices; I'd just like to know if I can undo it somehow.

Thanks in advance.

Have a great Friday.