Setup combos are good.
SHEN WOO PUNCH LITE -> SHEN WOO AUTOCOMBO. Kinda works like f+B->f+C->SHEN WOO AUTOCOMBO.
I haven't really done it on blocks though, since I'm using the A version more, it gives me a safer range. So I haven't been using the C version since finding the goodness that is called

+A. Perhaps if you do SHEN WOO PUNCH LITE C version on block and do the SHEN WOO AUTOCOMBO it would work. I haven't tried that out yet!
Oh yeah, to reply to someone who was trying to do close C->SHEN WOO KICK->SHEN WOO BACKSLIDE, it works, I essentially make it my block combo now (quite safe on all occasions). With f+B there's so many fun things to mess up the opponent, like after SHEN WOO BACKSLIDE you do a SHEN WOO PUNCH or something etc or do a SHEN WOO FORWARDSLIDE and attack further.