It was good. I had 16 interview invites (applied to 55). I think it was because I applied and prepared very smartly (using FRIEDA and contacting PC's early on to see that they would ACCEPT comlex scores in lieu of COMLEX). 1/3 of my invites were university, 1/3 were communiversity, and the other 1/3 were community programs (most were ACGME, a few were previously AOA). All those university programs have some DO's and IMG's on their roster (some more than others) but almost all also had USMDs as well usually from the base MD school. 2 of the university programs were either AOA previously, or had a dual-accredited IM program.
I was asked why I didn't take USMLE at one interview and was told by that faculty member that it wasn't perceived negatively as long as you scored well and had a strong application all around (especially letters as per them).
My close friend who applied IM had very similar COMELX scores and USMLE scores in the 235+ and received more university/stronger community invites than I did. So without a doubt, having the step scores helps in IM especially if wanting to stay in academics/sub specialize in competitive areas like cards/GI/HO, and I knew this going into the cycle.