Well from what I've learned so far, Kindred is a very effective champ when it comes to early trading, invading and ganking. His base dmg and kit just allows for it. I use to go for devourer back when it was absolutely broken. But warriors is pretty efficient at giving a hard edge on 90% of other junglers.
At some point I was even harrassed in game for building Devourer, so I looked some guides up (Svenskerens in particular) and they all swear by Warriors.
But it just seems that recently Dev Kindred got really popular again. I'm kinda thinking I missed out on a buff or something to the items, Kindred is getting nerfed next patch but her winrate since 6.6 raised by about 3%.
I guess I'll just have to try it.
(Gotta love the downvotes for asking questions on boards, that'll teach me to be curious!)