Sorry - you're absolutely right - I just went back and looked after reading that people were able to access photos from the MicroSD card. I have been able to do that as well.
What I found is that if I go to "Device Memory" to view pictures that are in my phone memory (and not the MicroSD card), that it is difficult to navigate back to MicroSD (thus giving me the initial impression that it was not possible).
In order to navigate back to MicroSD I found that I had to use the left soft key and select "Up" to navigate up the menu. There isn't any ".." icon which most commonly would be used to allow you to go back.