Scouring forums some say it’s good, some say not, some say it’s good but they will certify establishments that are open on Shabbos. I didn’t find it on the CRC list but their list is very machmir and not all inclusive. So I don’t know.
From th ikc website “We are an Orthodox certification. Rabbi Zev Schwarcz, is the Rabbi directing the IKC. He is a graduate and musmach of Telshe Yeshiva in Cleveland.He has had over 20 years experience with Kashrus supervision with major kosher certifying agencies. All of our Mashgichim are Orthodox, bnei yeshivos. Our guideline is the Halacha (Jewish Law). We strive to do everything according to Halacha (Jewish Law).”