Using a BLTouch and a Z axis min microswitch?

I'm using Marlin 1.1.7 and plan to go to 1.1.8. I read the config files and have an understanding of how to configure for using a BLTouch. I actually connected it free standing and compiled the code to use it and in the mockup it was functional.

So when installing it I plan on connecting it to Zmax. I'm planning on leaving the Z axis microswitch installed and connected to Zmin.

Is this acceptable or will it be problematic?

My thought is leaving the Z axis microswitch functional as a fail-safe safety net.