The power outlets are an annoyance for us too.
They seem to both be switched, so only on when the car is on. No constant power.
My wife has a tendency to forget to plug in her cell phone, so she leaves it in the car sometimes to charge.
My Pathfinder has 2 outlets on the dash, one that is switched, and one always on (as well as one switched in the center compartment, and one always on back in the hatch). This works out great because it gives you both options (for example a radar detector in the switched on, a cell phone always on).
If it were MY car I'd do a quick wire switch on it and make it always hot, but this being the wife's, I'll leave it alone.