Thank you for inquiring about our Plugable products.
Given your portable solution requirement, have you considered an adapter?
One such example would be our new UGA-HDMI-2S seen here: https://plugable.com/products/uga-hdmi-2s
The UGA-HDMI-2S provides:
1x HDMI 1.4 video port that supports resolutions up to 1920x1080 @ 60Hz
1x HDMI 1.4 video port that supports resolutions up to 3840x2160 @ 30Hz
We also carry the USBC-6950UE seen here: https://plugable.com/products/usbc-6950ue
The USBC-6950UE provides:
2x HDMI 2.0 or DisplayPort 1.2 video ports that supports resolutions up to 3840x2160 @ 60Hz
1 x Gigabit Ethernet port
* please note that only two video ports can be used at any given time
Both of these options are fairly small and would fit easily in carrying cases such as your laptop bag. Please keep in mind that you will need to have the latest DisplayLink drivers installed for best performance. You can learn more here: https://plugable.com/pages/drivers
I would also like to note that we also recommend our DisplayLink adapters for light office usage for Microsoft Office and web browsing applications. Our DisplayLink adapters are not suited for heavy graphics workloads such as CAD or video gaming.
I hope this helps!