I installed penpower (1.0.0-2010072302) and also the patch on a phone purchased in Australia (and with Australian warranty I believe). Later, I removed penpower (and everything related to mscim) and re-installed because of what I thought were conflicts with programs like google-pinyin. Strangely, I don't have any complaints about IMEI now, even though all the patched files in /usr/lib/scim-1.0/1.4.0/Helper have been replaced with the originals! Just as strangely, I wasn't able to access penpower when I rebooted after the first install, even though I thought I had installed the patch and used the "sed" command correctly.

It is a shame that mscim gets rid of the onscreen keyboard. I have this awful feeling that the predictive text is also missing after installing mscim.