yaw damper for light twin

Hi -

Can someone share some personal experiences of flying small airplanes
with a yaw damper? In particular, does the slipping crosswind landing
technique require the yaw damper to be shut off on final? Does it
significantly aid passenger comfort? When installed in a light twin,
does it mask the normal immediate yaw/roll signal of an engine
failure? Does it make sustained single-engine flight easier? Is it
just an overkill?

- FChE