Not in any way connected with Ry_Tower's arguments but I've read somewhere that the handbrakes can indeed help you stop the vehicle. Although yes there's still the chance that it would lock your brakes but it can aid you putting your vehicle to a halt when you lose your brakes.

Said in the stated post is the "push button" on the handbrake lever shouldn't be let go of if ever you're using it while in motion and pull the lever up one click at a time

It's pretty obvious, though that if you pull the handbrake lever without being cautious about it, you'd spin out. But with proper knowledge, and at a proper speed.. everything should turn out fine.. well maybe some wear on certain components but that would probably be it.