I'm going to go against the grain a bit here and say that in my experience, the description of the Vision Pro as a dev kit feels pretty reductive.
I was a day 1 purchaser who bought it fully expecting the device to just be an early access "dev kit" and have been shocked at how well it's fit into my day-to-day uses for a huge variety of things.
Some of the things I like to do with it:
1. Gaming with friends: I play Baldur's Gate 3 with a group of 4 every week and can very comfortably relax on my recliner while running a discord window and stream BG3 from Geforce Now with an app called Nexus+ just using a ps5 controller. It's a very seamless experience and one of the highlights of my week.
2. Reading comic books: I thing this is one of the most underrated things to do with the Vision Pro. Being able to adjust the size of comic panels to an enormous size helps me appreciate the linework and detail put into every page.
3. Software development/photo + video editing: I use my MacBook Pro + screen mirroring to get a larger screen in an immersive environment that I personally find less distracting to get into a focused state of mind for writing code or creative endeavors like photo + video editing.
4. Entertainment: Watching movies, tv shows, and 180 SBS videos like SliceofLifeVR's content has been awesome and incredibly immersive. I much prefer the Vision Pro to my TV for solo viewing. Obviously, this falls short when looking to share the experience with others, but a lot of my viewing is alone, so it's fine for me.
Things that haven't really worked very well that I wanted to like:
1. Reading books + taking notes: I read a lot for book clubs I host and envisioned this being a great way to have a lot of available space to spread out notes and things during book clubs on discord and just find it to not be particularly enjoyable compared to reading a physical book or kindle.
2. VisionOS Native productivity: I've spent a decent amount of time editing spreadsheets and writing documentation with the VisionOS Native Microsoft Office Suite + PDF readers but find that there's a lot of minor things that add up to make it a less usable product for productivity outside of the context of screen mirroring. I'm going to keep trying to figure out a workflow that works better for me, but just haven't yet.
For context, I'm in my late 20's and live alone currently, so there are a lot of people for whom this device doesn't make as much sense for—I'm solely describing my personal uses for it as a member of the likely target audience.
Overall, I'm extremely pleased that it can do a lot of things that I find fulfilling and entertaining with little to no resistance. I can confidently say that for the tasks I listed above, it's my favorite way of doing them by a pretty large margin.
Additionally, I use the Solo Knit Band (M) for all of my usage with no modifications and find it comfortable for around 5-6 hours with no breaks in wearing it. I fully recognize that this isn't the normal experience for many consumers, and I likely will upgrade to some type of Halo band when a company like BoboVR release an AVP product line, but out of the box, the comfort is more than enough for me to use for extended periods of time with no mods.
Since buying it on release day, I've used it probably 2-4 hours most days with some days of 10-12 hours and some days of no usage and it's become an integrated part of my lifestyle. If anyone has any questions for me, I'd be happy to answer about my experience with it.