Anybody try one on a Ninja? Does it fit?

I think that BlueTyke uses one of those.

That I do!

So far I haven't had any problems with it. It doesn't get used to often as I don't do that much overnight travel on Tyke.

I also can use it with my Nikon bag to keep my Nikon safe from harm (or as much as can be expected)

http://i147.photobucket.com/albums/r290/BlueLilTyke/09-02-07%20Back%20in%20saddle/DSC_0043.jpg

http://i147.photobucket.com/albums/r290/BlueLilTyke/09-02-07%20Back%20in%20saddle/DSC_0031.jpg

thanks