I'm dyslexic and I love this idea! However this font is much harder to read.
Here are my trouble letters in this font: http://i.imgur.com/ilkUV.png
Note that there is no indication what letters these are other than by direction (which is really hard for many dyslexics).
Compare this to a regular font: http://i.imgur.com/mbi54.png
Note that there are hints in the serifs that distinguish direction.
I'm not dyslexic, but I still checked out the fonts expecting them to bump up readability even for me.
Usually, if some product is made to be usable by folks who have difficulty with something, it turns out to work better for folks who don't have that problem (kitchen implements come to mind).
That didn't turn out to be true in this case. I went "ouch!" when I looked at the page. Do you find this font giving you an overall bump in readability over the standard fonts?
Here are my trouble letters in this font: http://i.imgur.com/ilkUV.png Note that there is no indication what letters these are other than by direction (which is really hard for many dyslexics).
Compare this to a regular font: http://i.imgur.com/mbi54.png Note that there are hints in the serifs that distinguish direction.
By reversing the regular serif font, you can see these hints: http://i.imgur.com/t1sxB.png=
Also, the kerning is pretty bad: http://i.imgur.com/A9PJk.png