I used Shadow about a month or two ago for about a week before I was hit with a ban on my account.
Shadow was relatively good. The whole experience of signing up and going through their verification process was smooth and had no issues.
The ESP held up pretty well and was useful for most situations and updated positions pretty regularly.
Aimbot was alright. Recoil pulled down too hard most of the time and it went crazy if an enemy peeked and re-peeked or a Jett dashed. However, I'm not sure if this was fixed on their end, but was one of the major issues when using it.
Overall, shadow is a pretty good provider, but they're hit with detections every few days or it was a delayed detection from Riot.