In the notebook 07_3DEP_Generate_Colorized_PointClouds.ipynb, Changing the outCRS did not change the elevation values in the resulting laz to be ellipsoidal.
The test polygon in AOI_GCS was:
POLYGON ((
-82.805178 27.800081,
-82.795567 27.807825,
-82.778748 27.790666,
-82.773428 27.780794,
-82.784583 27.773049,
-82.790247 27.788844,
-82.803118 27.794766,
-82.805178 27.800081
))
Globalmapper was used to examine the laz file.