isky e4 cam lifters

I have heard of different crowns on the lifter face but don't recall ever seeing them. I'm sure they would be fine but that would be the only thing affecting the compatibility with your cam. I used BB lifters from a solid MP cam I had laying around new with my Isky .510 solid in my small block with no issues.
I shouldnt have any issues with using a different brand lifter than camshaft right. Whenever ive done cams ive always used the same brand for both