The front mounting points from the ST have now been removed from the frames. The frames do attach to one of the footrest mounts, I do not carry passengers so have removed the footpegs anyway.
When the panniers are fitted they are about as wide as the bikes mirrors, one of the reasons for making my own fitment was that I could fit them as snugly to the bike as I wanted, and I believe that the mounting frames and panniers from the ST ranges are more robust than the SS ones.
One minor problem that I will sort yet is that the SS indicators are in a stupid place and force the panniers to be fitted where I have them, but I will could change the indicators to be 10cms further back and then move the panniers allowing a pillion to be carried too.
Some may think that the panniers look big but they can be too small and not too big.
I will do drawings and pictures when I have all the fasteners sorted and the frames are painted and finished and will put them on my blog.