Just make sure you bind it correctly based on your receiver type and I used 50% throttle based on some of the posts here. It's a little scary trying it for the first time not knowing for sure if it's going to work.
I just tested mine yesterday by turning the radio off, the multi climbed about 20 feet and hovered for maybe 30 seconds. Then landed right where it started. I don't know if it's best to test by turning the radio off or using the switch to enable failsafe. Anyway, it seemed to work really well. Just make sure to wait for no red flashes indicating you've connected to enough satellites to enable setting the home point.