The big reason for the need to pump the collective in the NOTAR is that it just takes a little more time for the tail to react. It has the same authority as the tail version, just slower.
Going into a high/hot place, if you do a correct approach to a hover, should not require any pumping of the collective. It should not be any different from the rotor version. The only thing that may occure is if you are in gusty wind conditions (winds varying say 20-30 degrees in direction) with marginal power, you may need to plan your approach to the ground to avoid exceeding the engine limits in a hover due to the pedal work.