hmmm.... i just manually popped in a kernel module for my sharp camera doing the unmount mount,rw bit. Wouldn't it be possible to mount the ro filesystem rw, pull the sharp pim, manually splice in the bits of kde pim more or less where the Sharp pim stuff was, set up links and then just.... reboot?
It sounds like a colossal PIA, and might not work right. But it SHOULD be possible.
On the other hand, You could just go in and pull the sharp pim stuff, then install k/pi to your sd..... If you knew what & where the sharp stuff was