If they block the f3 they can escape. The setup is also escapable if they use a wakeup attack, but because you also jump out of the way when you plant the bomb, your usually out of range of their attack, and in some cases you can punish them for doing so.
Lol I saw this before I read that other post you made. I thought you were suggesting we do a combo ending with Sword Flip, then dash in for a sticky bomb.