Indoors I would say they have their uses, they offer protection in really confined spaces (but should you be flying in really confined spaces, especially as a newbie?) and in general against indelicate indoor use of the joysticks for another. The
mini 2 has an optical position sensor that is most likely excellent PROVIDING there is enough light for it to work.
During the last flight that I flew indoors I doubt the drift of my Mavic Mini was more than 1-2cm and I would say 3-4cm would be the upper limits for my normal indoor flights. NOTE there must be sufficient light for the sensors to work. Without GPS (which is likely indoors) and insufficient light the drone will revert to ATTI mode and NOT attempt to hold lateral position, a crash would be almost inevitable.
There are a few things you have to watch out for,
1) turning a
Mini 2 in motion is unlikely to stop the original motion which would result in side-slip. So if, for instance, the drone was heading for a wall and you just turned the drone to avoid the wall whilst continuing with the same speed, there is a fair chance the drone would side-slip into the wall. What you need to do is release the joysticks and the drone will brake. This assumes you are flying slowly enough for the braking to stop the drone etc..
2) left and right are reversed when the drone if facing you!
If you have kids or G.Kids that are going to be experimenting with this then yes I would get some.
Out of doors I would suggest they have much less value in that they are likely to increase the sail area of the drone (making it more susceptable to wind) and may trigger payload modes (which introduces height and rnage limits and possibly speed as well) .
Oh one other thing comes to mind read,
It has recently "come to light" in here
Mini 2 has the pitch angle limited when the camera is pointing straight down that, when the camera is pointing significantly downwards, the
Mini 2 limits (reduces) the maximum tilt of the drone when the drone is in C and P flight modes. The drone's tilt...
mavicpilots.com
Will Mavic Mini guards fit the
Mini 2? Apparently so but they are a tight fit.
Mini 2 arms are apparently stiffer than Mavic Mini arms, so there may be slight dimension differences.
I flew only a few flights with guards on.