Ext4 read-only warning, Handbook

The handbook reveals that FreeBSD has limited support to EXT journalling 
and encryption, however, it doesn't explain how limited the support is.

I mounted an ext4 partition that was meant to be shared with linux (yes, 
with journalling, my bad) and the files edited in were corrupted. I had 
to run fsck on it and fix the errors, with potential loss of data.

Only after that did I read: https://wiki.freebsd.org/Ext2fs
"

NOTE: If you are trying to mount Ext4 partitions, and we don't yet 
support writing on your particular release, remember to specifically 
mount the filesystem *read-only*.

"

As a warning to new users, could you please add this line to the 
Handbook? This note is VERY important and shouldn't be left out.

PS: How good is the support for ext2? I plan on creating an ext2 sharing 
partition for both bsd and linux.