Very timely post.
Just got mine in last night. Very easy to mount - I ordered their clamp mounts ($14 each) If you trim a little off the mount and enlarge the holes, you can use the gauge mounts on the triple. Their clamps are very secure. I really like the idea of mounting them in the original housing, but for this one, I'm wanting a lower profile. They look well made and seems like they would be easy to water-proof enough to keep things dry. They are pricey, but you only live once... as far as I know.