I rarely get those, and when I do, I only give them to allies if I have better ones on me and I consider that these allies are gonna stick with me for a long time. Meaning the SSS allies that I will not be using for fodder any time soon.
What I'm saying is for example an ORB offhand weapon. You have to choose between 1 with INT or the 1 with Additional Elemental Damage. Which would be better for your ally?