How much experience would you expect from a CCIE?

Firstly I apologise if this is against the rules. It's not really an early career question however I can see how it might not be permitted for the same reason

I'm about to begin to pursue CCNP R&S exams having been operating at that level for a while in my career and having completed CCNP Route/Switch courses. I have about 8 years of Sysadmin experience and 5 really focused on networking. After this I'm planning to move jobs to get something more network focused (currently have a 50/50 split).

What I'm trying to gauge is if I should be thinking about CCIE after acheiving the NP? The CCNP is the logical next step from the CCNA but is the IE the same for the NP? Or is it accepted that most don't go on to the IE and those that do should have more years under their belts?

I have had dealings with a few CCIEs (especially security ones) where they've got some gaps in their general knowledge in networking and I've honestly been a bit disappointed.