Only do it if you have, or when you get Matter/Thread devices on your network. IIRC, last time I looked at this it appeared to be much more complicated, required an extra add-on container, and was expiremental, so came with the caveat of ‘things might break on updates’.
Is the pi running home assistant or is it an external pi running Z2M independently? Is it connected to your network via WiFi?
I made a pressure sensor for my bed with an ESP board, some tinfoil, foam, and cut up Ethernet cord. Here it is talked about on HomeAssistant forums.
If you go this route make sure to read all the comments in this thread. Original uses paper, I used some foam to make the distance between the tinfoil larger. There is also a comment around the 150 comment mark that has some extra settings to put in ESP home regarding voltage. They made a massive difference in false positives, which you really don’t want if you are relying on this for keeping the lights off while you sleep.
I don’t run any zwave, but I don’t see why it wouldn’t work. I don’t notice any delays. Tbh things feel snappier and more reliable, but I was previously using like a 50 foot usb cable lol. I don’t think it would function any differently, in terms of stability, than zigbee2mqtt because Z2M actually uses ser2net as well to accomplish this.
You can use a remote adapter with ZHA as well. See my guide.
I built one with an esp32 and some tin foil and foam. link to guide. If you go this route read through this whole thread for improvements to the final product.