For a few weeks now I've been doing something similar, using a Pi + v2 camera module instead of the HQ¹. This gives me an affordable(and hackable, to boot) webcam of a surprisingly decent quality with 60fps at 720p, which most consumer webcams can't do at all, since apparently no one cares about framerates(I have niche reasons for caring).
¹ It's also over a network with uv4l because the v2 720p 60fps mode isn't supported by the uvc gadget stuff. It's a bit of a shame, but I haven't had problems with the network transfer. The biggest issue with all this is that my Zero will occasionally overheat and the video will start freezing up, and I don't have much of a solution besides "don't put it in any kind of case".
¹ It's also over a network with uv4l because the v2 720p 60fps mode isn't supported by the uvc gadget stuff. It's a bit of a shame, but I haven't had problems with the network transfer. The biggest issue with all this is that my Zero will occasionally overheat and the video will start freezing up, and I don't have much of a solution besides "don't put it in any kind of case".