I like that design too. An advantage of this design is it can remain vertical with a heavy CPU heatsink (the XTIA needs to be laid down). I also suspect the graphics card will be cooler with more airspace (I intend to put this hypothesis to the test soon). It's also not clear if they support attaching hard drives? And lastly, I anticipate this one will be cheaper all things considered (e.g. not requiring an SFX power supply) and US-made.
Built-in KVM is amazing. External KVMs are ridiculously expensive. Especially if you want powered USB-C and adaptive sync. If it even exists, you're probably talking at least $1,000.
Do you have a sound bar or external speakers? If so, I assume you only have one of your devices connected to them? With USB-B the audio source is determined by whatever device is currently selected by the monitor. It's nice.
Not really. How do you connect the PC and MacBook to the sound bar? If connecting both directly to the sound bar, you'll need to switch those too. So each time you want to switch between PC/MacBook, you'll have to:
1. Switch the video source on the monitor
2. Switch the USB destination on your USB switch
3. Switch audio source on your sound bar
That's why upstream USB-B is so compelling. The monitor acts as a full KVM.
Another con: no upstream USB-B port for connecting to a PC. Also might be hard to power with a graphics card given the higher rez. Sounds super nice for productivity though.