I may also add, the keyboard eliminates some of the autocorrect that the onscreen keyboard can do. For instance when I typed "Im" with the ASK nothing happened, but the onscreen keyboard was able to autocorrect it to "I'm" - the onscreen keyboard is the real 'smart' keyboard.
Just picked the ASK up today for my 10.5 and I love it. Definitely finding it convenient and using it all the time, so far just mainly when browsing the web, etc. Yes it was a pricey, but no complaints from me as of yet