I know one maintance man that wished he had this meter 20 years ago. His partner was handling the probes & he was holding the meter in his hand reading the values ( not a FLUKE ) when it shorted out inside causing a arc flash. Scared the man with the probes for life, and burned his hand. It also wielded 40 fuses into their holders.
I could see where this feature would be useful in certain other circumstances when working alone. Say you were checking for NEV by turning off each branch circuit one at a time, each time you have to go back outside to measure.
I have been aware of this meter for several months now. Am I going to run out and buy one ? No, but when I replace my meter...who knows. Of course by the time I replace my meter - all meters will probably be like this.