Crude fallback when unison isn't available on your local machine. (Note that this method stores duplicates of the files of interest on the server.)

rsync-to-unison.sh

# Paths of interest
LOCALDIR=syncdir
HOST=user@example.org
LANDINGDIR=landingdir
TARGETDIR=syncdir

# Sync files from local device to the server landing dir
rsync -auv --delete $LOCALDIR/ $HOST:$LANDINGDIR

# Two-way-sync the landing dir with the target dir
ssh $HOST "
unison $LANDINGDIR $TARGETDIR \
    -path paths/of/interest \
    -path general/notes \
    -path work/project
" || echo # suppress potential non-zero exit ...

# Get eventual changes back to local device 
rsync -auv --delete $HOST:$LANDINGDIR/ $LOCALDIR