Ok so actually out of boredom (and because it regularly pains me that it's not possible) I was looking for a way today to use all my precious mobipocket dictionaries on my android.
And today it worked!!!
You can use this program to emulate PalmOS on an Android device:
It costs 50 dollar but it works:
Now you only need the palm version for the mobipocket reader:
I put the mobipocket file into:
The dictionaries I put in the root folder of the sd-card (maybe there is a more elegant way)
I have just taken a look so far and only half of my screen is palm screen and the resolution is 320 times 320 or something but it works smoothly with all dictionaries I have tested so far. (new oxford among them)
For some dictionaries I needed this file:
unfortunately they are all down at the mobipocket site