Well, I should have been clear that the language was based on English, so it more or less ended up as "intentionally misspelt" English with the exception of the hundred word base dictionary.
The difficulty in learning it lay, as you point out, in that people tend to parse words visually rather than phonetically. The challenge was to alter your mindset while reading, to try to parse the words phonetically rather than visually. Once you learned to do that, it was fairly easy to use it - but yes, it took some practice.
Of course I understand that these examples are not interchangeable. I just wanted to offer my observation after actually having spent some time doing something similar to what this site tries to do "for real" (well, if you can consider an RPG real:)