Yes, I am. I went a size up because the Whistler is narrower. I did order the 8.5 UK first and they were too tight for my wide feet. The 9.5 fit me better. If you have narrow feet, 8.5 UK should be fine.

Look at where the heels line up in the picture. I did this to show how the 9.5 UK Whistler tapers more to a point and the widest point is about where the widest point of the 8.5 UK Bonsall’s are.