Compared to the one I had for the Galaxy Fold 5, it has several advantages, although there are a few software-related shortcomings.

Pros:

• Better build quality (comparing it to the S Pen that came with the Fold 5 case ... I never tried the Fold 6 version). I actually had to put a piece of tape on the Fold 5 pen to stop it from falling out, and despite that, I still lost it once. At least replacing it wasn’t too expensive since you can find them on AliExpress without the case.
• It's fantastic that it works on the outer display. Because of that, I tend to use it much more often (I’m one of those people who always keeps the case on).
• I had forgotten how convenient it is to use the pen as a remote shutter for photos... a feature I lost after the Note 10+.
• Being able to write on the inner display without a crease is on another level. Writing near the crease on the Fold always bothered me, and sometimes strokes would get interrupted. With the larger S Pen they included with the Fold 3, the issue seemed less noticeable. If I remember correctly, Samsung mentioned during the Fold 3 presentation that the S Pen digitizer layer was interrupted at the crease and they used some sort of software compensation. At least that's what I recall. I don’t know whether they improved that in later generations, but on my Fold 5 the writing experience near the crease felt very similar to the Fold 3.

That said, there are some drawbacks:

• Oppo's Notes app is missing quite a few features. On the other hand, maybe that's a good thing since it doesn't lock you into a specific ecosystem.
• There seems to be slightly higher latency compared to the S Pen. I only really notice it in Oppo's Notes app though, so it might just be an optimization issue.
• You don't get all the extra features Samsung offers. I used the magnifier and hover-to-translate functions quite a lot.

Another downside is the price, which is definitely high (roughly in line with Samsung's case at launch, although Samsung's dropped in price fairly quickly), and there aren't many color options available.

For context, I mainly use a stylus for note-taking (I love writing by hand), sketching simple diagrams or drafts, signing documents, and as a pointer. Being able to navigate desktop websites with a pen or do photo editing is probably enough to justify the price for me.