This is one of the biggest draws for me. Overall it’s annoying to have a dashboard screen locked (even when there isn’t an emergency).
As @gavincampbell mentioned, it all depends on exactly which device, which fireOS version it’s running and other details of the hardware.
XDA developers is the best site for figuring out what might work with a specific fire tablet you have or can get your hands on.
Here’s an example of a thread for the Fire 8 inch tablet:
