Thanks for the input earlier Shogmaster. Let it (Yoga 720 13", i7 8550u, 16 gb ram, 1 tb SSD) go through and yeah was 8th gen actually. Might as well post some thoughts on it if anyone is curious.
+ My first time using the 2 in 1 form factor, and I like it a lot. I had a Surface Pro 2 and while I got plenty of use out of it, I ended up disliking the lack of a real keyboard as the loosely attached one was terrible for casual use on a couch/bed/etc. and the 10" screen size was just a bit too cramped for my tastes as art tablet use. This seems like a much better approach at least on this 13" model's size/weight, the tablet tent and laptop modes all work well and the hinge is really solid. The keyboard feels fine to hold against the back in tablet mode, though I do worry it might get scratched.
+ General build quality is very solid, not a lot of flex, hinge is nice like I said, keyboard is good, etc. They do sell lower end models of this relatively cheaply so it's not top of the line, but still. Also the first time I've had a fingerprint reader on a laptop or phone, and it works great.. much preferred to constantly entering my PIN.
+ I didn't have any issues with the screen, updates, etc... probably shouldn't really be a positive but I had read some reports.
+ The digitizer seems good, and it came with the 2nd version of the Lenovo Pen when I was expecting the first. The side buttons are so low profile they can be a little hard to hit but it looks/feels decent not the cheapy that came with the Surface Pro 2. The Bluetooth button feature that has been added to many W10 pens is cool.
+ It might have been the 15 inch version, but I had heard something about fan noise.. no issues there, runs cool and silent for web browsing and such and under load the fans aren't bad.
~ The 4K screen is certainly a positive for the laptop, but I will say that other than the resolution itself the screen is good not great, haven't tested the color accuracy or anything but just not as bright/vibrant as some.
- I was disappointed to see the CPU is so heavily throttled. Obviously on a slim laptop there are cooling issues, but by default it only goes over 1.8 GHz (granted as an 8th gen quad core the performance is still pretty good) for brief moments. I did however read up and use a program called "ThrottleStop" to remove the throttling and tweak it myself to acceptable heat/fan levels after undervolting the CPU a bit. It seemed to handle ~2.6 GHz under extended load without overheating or draining the battery too bad. Need to run some benchmarks to see what effect the tweaking really had on it though.
- The obvious that I knew in advance, it's an integrated GPU so gaming performance is limited. After reading that the ram being in dual channel mode would get a little extra out of the GPU than most similar laptop configurations I hoped to get a little more performance than I have so far between that and my throttle tweaks.
Overall I'm pretty happy with it, though I'd be curious to get hands on with the 15 inch version and see how much the extra size/weight impacts my use. I have a feeling it's still small enough that I'd like that I'd probably take the tradeoff just for the fringe GPU uses traveling or such away from my desktop, but who knows.
Since I've been setting it up, I'll also mention the W10 software "Touch Me Studio" and "Tablet Pro" just for general info in the thread if it hasn't been mentioned yet. The gesture control from Touch Me is a huge upgrade on W10 usability in tablet format IMO, I have it set up to do thing like 3 finger rotation clockwise for volume up, counter-clockwise for down and various other system controls (brightness, play/pause for music, close program, etc.) that are much faster than opening up the icons on the taskbar or such. Can also quickly toggle them on/off if they are interfering with a program. Tablet Pro can do some of the same things, but is mostly for putting touch menu controls on the side of the screen for Photoshop shortcuts, etc.