One major draw back of AT is that as kids get older they don't want to look different than their classmates, and using an iPad, for example, might be the very thing that makes them look different. While reading his book this statement made an impact on me...
"...the accommodation meant that I was getting something "extra" that the other kids in my class couldn't have in order to do the same work. But now I know that a better way to think of this is that some people were not given a key to the building, and the accommodations were simply a way of getting into the school. That metaphor might help your child understand the value of accommodations and be comfortable getting them."
"The best path to learning for dyslexic children is to use an Orton-Gillingham-based reading method for the first two to three years after having been identified, while simultaneously employing the best accommodation technologies"
An iPad has many apps that can help a dyslexic, from reading to writing to memory and organization.
There are many things out there, but you must do your research. Remember, if it sounds too good to be true, it probably is.