I actually made the full 66B BE W! 1B] study.
66B BE W! 1B] will give you :
BACKTRHOW AGAINST : Patroklos, Leixia, Natsu, ZWEI, Ezio, Siegfried, Xiba, Ivy*, Cervantes, Night, Mitsurugi, Yoshimitsu, Alpha Patroklos
SIDE THROW AGAINST : Raphael, Pyrrha, Hilde, Aeon*, Tira**, Maxi***, Dampierre, Omega Pyrrha, Algol
FRONT THROW AGAINST : Astaroth
* = 1B] will not connect if Voldo is on opponent's left side
** = 1B] will not connect if Voldo is on opponent's right side
*** = 1B] will either not connect if Voldo is on opponent's left side or the throw will not connect.
1B] will not work against Viola at all.
PS : The throws were not delayed at all. For an exemple, after a 66B BE 1B] situation throw is faster than Mitsu's BT B+K