If your friends aren't using them and you're the only one with a pair you'd be less inclined to wear them. Everyone thought Google Glass was going to be the future but those glasses made you look like a total douche. Hopefully the Spectacles wont be branded as such.
If Snapchat sets up the glasses business as an additional revenue stream, it could well become a reasonable but limited success, if they set it up "strategically", maybe even selling at loss, I predict terrible failure.
If the glasses are promoted as something you only wear when you want to record video and that you otherwise put away it might take off.
Nobody minds when you pull out a cell phone and record video because it's obvious you're filming. I think it was the omnipresent threat of being secretly recorded that made Glass creepy.
Glass definitely failed in the marketing, branding, and roll-out departments (among others) -- but they're no more or less doofy (to me) than many other perfectly-accepted fashions: baggy pants, beats headphones, crocs, etc.
That is a fairly small focus group.