The fact that Fram puts metal end caps on their premium filter may be as much an attribute to satisfy market demand, as opposed to a true "need" for metal. So, why does Fram use a metal end-cap in the Ultra? Because people want it to be there for the price they pay. The expectation of presence is based upon desire, and perhaps not necessity. It migth actually be a bit of both; it may be of some benefit, and it also has sales value in percevied customer attraction. Most of us don't work for Fram, so it's only speculation on our part. What Fram has in the video is certainly plauible.
As for the fiber material ... How about a little challenge for those who have disdain for fiber end caps in general and the OCOD in particular:
Please post DIRECT evidence of engine damage specifically attributed to the failure of a fiber end-cap to seal against the media, and/or stay intact for a normal OCI, or otherwise not successfully perform the task it's assigned.
Now, when I say "direct evidence" I'm talking about well documented, preferrably with photos, and true tear-down analysis of both the filter and resultant damage. I don't want to hear any third-hand story line from some other web-based wanna-be site where a pretend engineer spouts off about "best" filter practices, or touts how "more is better" when it comes to FCIs, etc. I don't want to hear about theory; if you want to convice me, then I need PROOF. If you cannot SPECIFICALLY point to DIRECT evidence of failing fiber end-caps and how they were direct causation of engine damage, then you're falling short of what I consider "proof". I realize that's a high bar to set; you'll have to leave hype and rhetoric at the door and stand soley on facts and data.
If you don't like fiber end-caps, that's fine. But please separate out the emotional bias from the factual basis, and show me tangible reasons not to trust fiber in this application. Yes - I'm going to be "that guy" that picks apart the so-called evidence until I'm totally assured that mythology is laid bare and only the truth spills onto the floor.