I generally use it when people want to zone. It gets them to change their mind real quick.
Yeah, that's still punishable. For example; If Ryu does fireball at fullscreen, you do V-Skill the instant you see the fireball, all Ryu has to do is dash in once and do HK Tatsu to punish you.
As much as I like Mika, she has an incredibly hard time to get in and has no good wakeup option. Officially switched to Birdie.