Low oil pressure at idle?

I can tell you the 5.7 is stock form does not like any oil except what the manual says. Had a friend's hemi ticking after an oil change. I told him to change it with the correct weight of oil and its been fine since.
They have also had a lot of problems with oil pumps on these. A friend lost his engine due to a failed oil pump. Do a google search, there are tons of posts about it.
10 psi at hot idle wouldn't be too concerning but I would keep and eye on it.