Thanks Serg Markov for bringing my attention to this:
http://www.opennet.ru/openforum/vsluhforumID3/86552.html#61

While the official distros might skip some filesystems for
support reasons there's no reason for community distros to
do so either.

Let's try that with icewm.iso...

NB: installer has a misfeature of dropping jfs/reiserfs
    support in runtime unless "expertmode" magic word
    is on the kernel bootargs string (#27763, #17368).