Been there, done that.
Decided on the hardwire with a display. Easy to install for anyone with minimal skills. Now that it is in place, I rarely have to think about it. I check the display after hooking up...glance at it when couriosity gets the better of me...go to it for answers if we lose power.
I figured a portable one just advertised that it was there (tempting it to run-a-way). Those locks just seemed to invite someone to cut the cord...unless I also locked the electrical box (not possible at every campground) which was an extra step.
Unless you have visual access to a portable unit "installed" in the cord compartment...I wonder what good it is doing. Sure, it will protect the unit...but how do you "SEE" if all is well or why it was tripped?????
There is no right/wrong answer....do what you feel is best. Just do it, the protection is worth the money.
Of course, that statement may cause an arguement from those with differing opinions as to "needing" protection.
