I see several drawbacks in the one you mentioned:

- not very powerful (singlecore, 128M memory) - though more than enough for a router
- rather bulky
- quite power-hungry (6W? Really?)

If you want an external device, I would rather go for something like an Orange Pi Zero that

- is much smaller
- is much cheaper
- is much more powerful
- consumes a lot less energy
- runs OpenWRT as well, but also Devuan, Alpine or other Distros if you want
- can be powered from USB (no need for an external ac adapter, but might work with your model as well with a barrel cable?)

Of course, the built-in wifi in the Orange Pi Zero sucks so you will need again some USB adapter. Overall, I am not yet convinced about the benefits of using an external travel router if you do not have loads of devices you want to supply with Wifi connectivity.

With regards to my earlier topic, it seems that USB 3 Wireless Adapters, supporting Access Point Mode under Linux, are a rare beast.

I've now decided that a Small Travel Router like the following is a better option if it can also support an Internet Connection from its LAN port to my Laptop when operating in Repeater mode.

GL-iNet Slate (GL-AR750S-Ext)
https://www.gl-inet.com/products/gl-ar750s/

Does anyone have recommendations for those?

Thanks, MTB.