I would not worry about it. I have not heard anything about the f being different from the k really.
The whole thing with handlebar shields is mainly that the wind can grab the shield and pull you out of control.
I suppose a big part of it is the size of the shield used. I know I have ridden smaller bikes with bar mounted shields and no issue but never hit high cross winds. If it is an issue, you could always mount a steering damper to the bike.
The ride IS the adventure. The destination is just to get gas!