Okay, final reasking of the same question I asked a few posts back (thanks for the answers to the other parts though) will either of these be overridden with a kernel-only flash (I have my guesses, but I'd rather have people who know more about what is counted as a part of the N900 kernel and what isn't by the flasher utilities confirm):

/usr/sbin/fmtxd (<--- My guess is no, because I have a python script [woof] sitting in /usr/bin which did not get erased when I flashed the uboot+power41a.)
/etc/init.d/rcS (<--- This one I really don't know, but my guess is yes?)
/usr/lib/hildon-desktop/fmtx_status_menu_item.so (<--- My guess is no, because the other custom status menu apps [advanced power/interface-switcher, brightness applet, etc] I have all survived uboot+power41 flash just fine.)

Also, what does FMTX faker edit? I know it patches something - is this file also part of the kernel, in so far as the flasher utilities are concerned? (Edit 2: seems like FMTX Faker patches the "FM Transmitter Daemon"... which is, /usr/sbin/fmtxd ? Right?)

Thanks in advanced to those who know the answer and do reply.

- Edit -

Just noticed e-yes' name in the list of people reading this thread. Can this be taken to mean the NITDroid team is taking an interest in seeing what can be done with adding uboot support to NITDroid?