I have one. Not indispensable, wish I had saved the $$$. The auto feature doesn't work well, sometimes you will be reading a diode and it will decide it is a resistor.
Switching to voltage measurement mode with the crappy "trace" mode thing (a pretend oscilloscope) is done with a flush-mount slide switch on the side that is impossible to work with your fingers. It's too slow to work as an oscilloscope.
And get this - if you accidentally select that mode, the damn thing points an arrow at the aforementioned impossible slide switch and BEEPS at you to slide the switch - and there's no way to exit from that mode without finding a damn tool to slide the switch!
On rare occasions it's slightly more convenient than a multimeter, but not often.