This seems really situational.
If they do a jip you eat a full combo
If they have a djk special link you eat that.
If the spacing is different you eat it.
Let's not say 'lul you guys just aren't labbing it'
Remember when fox said subs f2 was reactable and everyone was like go lab it lol.
Then he later admitted he couldn't do it in game.
JKs are badly designed and have been since day 1. This is a good option to have in the bank but it's not some huge revelation we all should have labbed.
Worth posting but the shots fired comments just a bit silly.
Jip whiffs even worse than jik on neutral crouch. Try it. And if you're resorting to jip (not sure why you would) it's easy to AA normally.
Jik whiff into special would have to be a really particular special that doesn't whiff on someone neutral crouching. Unless you mean a really deep jik into some special that captures, in which case, everything he said about deep jk's applies (it's easy to AA them). And unless you're doing more damage via that special than you would lose if AA'ed, the risk reward on that is not in the jumper's favor. Also if you're committing to the special and they just block it, you've now in most cases converted your jumpin into an unsafe one. I don't think this is an answer.
And everything in this game.. Normals, many specials, AAs and even the jumpins themselves are spacing-dependent. Obviously if you don't have the proper spacing, you'll do something else. For example if they're at the tail edge of jik distance you could just walk back slightly. Doesn't make this any less valuable.