Re: wall sconce switching
I would talk to the electrical contractor responsible for the wiring in your home to find out how the sconce outlets were wired, then back trace it to the most convenient location and install a switch. This should not be that big of a deal and would only require the addition of the switch box and up to two outlet boxes, depending on how it was wired to begin with. Also, was the sconce outlets originally designated as switched outlets? If so, then it would be on the electrical contractor or the general contractor to correct their mistake.
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!