Easy solution for this matter is answering a simple question:
Do you have in RL the courage to approach a stranger on the street and tell them "Please, get dressed properly, because I can't stand your current outfit." (or something similar matching your personality)?
For all the brave souls responding with "Yes!", I'd say you deserve the option to turn off glamour on other players.
For those who don't have the courage, though...
You cannot click your fingers and magically make a horrible outfit of another person disappear in RL, so why should you have that ability in a game, when you're unable to even ask another human being in front of you to do something about their look?
In general, from my own perspective, the thing about glamour is how you express yourself - same goes for clothes in RL, thus I don't find it really fair to ignore other people's efforts just because some players let their characters wear questionable outfits. I for one see thousands of beautiful glamours, while only crossing paths with very bad ideas once or twice a month, which is why I wouldn't use that option even if it existed. -.-
Also, for everybody who'd like to have the option:
You DO realize, that people wear sometimes stuff that isn't entirely the same set, yes? Miss-matched outfits would be something you'd often have to see when turning off glamour; ergo, that'll be something you better shouldn't complain about. But in case staying tame would be no problem for you, I hope SE hears your wish and implements it in the future. =U.U=