Definitely a good idea to use these.
My problem is that all the GFCI outlets I can find around here do not automatically re-establish the circuit. And as far as I understand, a powercut will also trigger the GFCI. So if you get a powercut while you're away, the GFCI will cut the electricity to all your equipment and leave it that way even when the power comes back on.
So I'm still searching for GFCIs that can re-establish circuits automatically.