In one kabbalistic Torah that I have checked I have come across the following type of vav
which is noted in Torah Sh'lemah vol. 29 and also in Dikdukei Sofrim and Me'ir Eyney Sofrim where it seem the flower version of the letter is kasher as long as the decorative flourish fully joins the letter form and it is still recognisable as a vav (some of the forms Torah Sh'lemah brings under vav certainly wouldn't be).
Have other sofrim come across this. Do you know more about this tradition? Are there any other sources that deal with it? What was it supposed to signify?