I guess answers will depend on your definition of "emergency situations",
GMRS is a good start, but a full basic understanding of all radio communication is key if you want to use it for emergency's. GMRS by its self is limited to others around you (line of sight), or some random luck fining others that are, maybe a local repeater to boost range. My 15 watt GMRS radio in my truck has been good for off road trips with others on the trail, but i use TDH3 or Q10H for real emergency monitoring.
What makes the KG-1000G good is that you have listening (RX) access to more frequently used frequency's (need Ham license to communicate (TX). This way you can be more aware of what's going on, but you wont be able to communicate on those frequency's with a GMRS radio (KG-1000G).