I don't think full face helmets are cool on any bike but thats just me. My neighbor is a motorcycle cop and told me that if you should go down waring a full face helmet there is a greater possibility of breaking your neck. I don't know if its true are not but thats what He was told in his training.
Wear your FF helmet!!!!
That extra piece in front of your face will be a plus if you kiss the pavement.
As for those that need "the look"....your beauty is a BLURRRR to everyone on the road and on the street as you ride by.
The only one that can see "your beauty" is the guy riding next too you..wink, wink!!!
Get a room!!!!!
It's OK to wear a full face on a SG as long as no one recognizes you and of course with a full face helmet on, your own mother couldn't recognize you. Just don't do anything stupid like putting your name on the back of the helmet. If you did that you really would be a dork.
Why should you care what you look like to anyone else? If that's what you want to wear..... wear it. I usually wear a 1/2, sometime a 3/4. If folks don't like the look.... they can turn their dang heads.... JMO....