Hi guys,
I thought I'd make a new thread as the other one is about pre-order, and now it's here (in limited quantities, at least.)
I made a video. It's long. If you want to see the IPV4 in huge detail, this is the video for you

If not, I've put in some time links below to jump around, and a text summary as well.
It has a first unboxing, a long detailed look through the menus, a TC test, and also some first HW problems that occurred to me live on camera. It's working fine now, but at least one the problems was a little concerning.
My TLDR, spoiler summary of what's in the video:
- The form factor I like, it feels good in the hand while vaping
- Normal vaping works fine, of course
- TC works fine, and out of the box - the manual incorrectly states that you must apply a firmware update for TC; you do not, they already installed it.
- The screen is like a mirror and practically unreadable in sunlight / bright light
- I generally hate the UI
- It has loads of UI weirdness and inconsistencies and just plain stupid design choices
- It has five memory settings, which is great; but you can't set an arbitrary, non-saved wattage (or Joule) outside of the memory - you can only change watts by editing a memory (unlike the SX Mini M/J)
- It has no lock feature of any kind - either lock fire, or lock settings; it should do, and the manual tells you how to do it, but it doesn't work - I believe because the TC firmware update has hidden/removed the lock feature. This could be fixed in a future firmware update.
- I encountered two hardware problems, live on cam:
- It randomly said "Too hot!" at one point, even though I hadn't even fired it for about five minutes. This persisted for several minutes.
- I changed batteries twice, and both times the new set of (fully charged, brand new) batteries read only 50% on the battery meter. This went away after I pressed fire once.
All that said - which may sound exclusively negative - I have since enjoyed vaping on it. The actual vaping - when I'm not in the menus and changing stuff - is fine; good even. I like the form factor, I like the feel of it in my hand. That surprised me, because it is basically a bit of an ugly brick. But it feels good and comfortable in the hand. It vapes flawlessly, so far at least. The TC already seems preferable to what I'm used to in my DNA 40 (clone) device. It looks to be a good mod for general vaping, just less good for adjustments and menu use. And at least one of those hardware faults I experienced remains quite worrying.
Apologies if the video is not fully up to the standard you may be used to from YouTube. I hope to improve in future

I do have nice clear, stable and non-shaky shots of all the menus and operation of the mod

And in extreme detail - far more than most reviewers do!
YouTube video link:
Pioneer4You IPV4: Unboxing; detailed look and thoughts; TC test; HW problems
Shortcuts to video sections:
Unboxing (just the start of the video!)
Start of using the device
First sign of HW problems
TC dry cotton test (passed)
Embedded YouTube video: