drecc,
1) Yes, there is a tb3 -> tb3 cable inside.
2) I don't use any scaling and I am very comfortable reading text, and I do a lot of reading. I am generally used to small text and prefer it. I'd say text is extremely sharp and legible. I'm very happy with this aspect.
3) Contrast seems better to me than what I'm used to from IPS, but I cannot verify this claim with measurements. I enabled local dimming even for SDR content and I am more pleased than my old VA monitor when it comes to black detail. In HDR, I am quite impressed despite the limited number of zones. Yes, you can run into its limitations on certain content, I'm not going to lie and say its OLED level contrast or anything, but I am impressed for sure.
4) Unfortunately, I got this from Micro Center in the United States. I just figured I'd help out here as I like this website and community.
Quartz,
I am using it for gaming as well. I have 2x 1080Ti in SLI and a 6850K processor for 16x / 16x PCI-E lanes. In Shadow of the Tomb Raider at full 5120x2160 HDR at just shy of highest settings but no AA, I'm pretty much locked to 60FPS with v-sync. Some scenes do drop to 50s but it's not jarring enough or common enough for me to lower settings any further, I'd say 80-90% of the time I'm at 60FPS.
Coming from a 3440x1440 VA monitor, I have to say that the upgrade image quality is just absurd. I very often stop or forget what I'm doing, because I've been staring at details in a random scene for a minute straight.
SupraWez,
If I'm not mistaken, it has full 5120x2160, two 2560x2160 side by side, and 3840x2160 (UHD) + 1280x2160. Does this answer your question?