Knights of Cygnus Skill Tables

I'd personally just not add into Sneak Attack. I mean, in Second Job, you'll still be using Lucky 7, in conjunction with Haste and Flash Jump for mobility. Going into Dark Sight and then attacking out of it just seems too much of a hassle, imo. Unless it can really make a huge difference in one's training, I don't really see a great need to put points into it. If someone begs to differ, please let me hear your opinion, as I have absolutely no experience with Cygnus.