Do you know how physically robust the Sky Viper is -- the article reports Bayangtoys X16 as being able to take a lot of beating; it would be great if Viper is robust as well.
The sky viper will hold well in crashes, you can pick up the non-gps version at Walmart. It's a kids toy so its made to be durable. That being said..if you're crashing your GPS assisted quadcopter you're already doing it wrong. I'm not really sure what applications a brushed GPS assist copter has though. It isn't powerful enough to carry any sort of payload and the camera quality is limited severely by that fact. Maybe useful for learning/tinkering with the code without the blender-ing capability that brushless motors have I guess.
Brushed motors are the classic motors that you may have played with as a kid, put in a dc current and they spin.
Brushless motors are much much much more powerful and essentially only wear out due to heat, or bearings failing.
Brushed motors can be damaged by stalling, heat, etc and much more easily.
The important part that the above poster was trying to make is that a brushed motor, any size that would be used on a retail drone/quad/ etc might spin a prop with enough force to cut..... maybe even need a stitch or two but unlikely that bad.
Whereas the brushless motors used in even small quads would most certainly need stitches, and maybe even sever a finger.