I think you misunderstand. The largest use-case for full-power is takeoff, and that is where the most energy savings comes from having an electric motor assist during the full-power need.
That does not mean that full-power would be unavailable for those other uses you mention.
The batteries are recharged during descent, if I understand correctly. Since "full power" in this craft requires the lithium batteries to be charged, I wonder how much reserve energy will be left in those during cruise for contingency reasons. Perhaps there is plenty left for fighting downdrafts, etc. Unsure.
One nice thing about electric motors is that they can be "throttled up" almost instantaneously, unlike some (not all) turbines. For example, that ultra fast response may be useful in a wind shear situation.
But if the battery is not in ideal state like just after climb up, would that be a problem as the real full power is not really available all the time it seemed.
That does not mean that full-power would be unavailable for those other uses you mention.