Also have realized at some point that reviewing the PKGBUILD and code in github repo still doesn't check whether the github release files are compromised.
bwrap --dev-bind /dev /dev --tmpfs /tmp -- labwc
bwrap --dev-bind /dev /dev --tmpfs /tmp -- kwin_wayland konsole
bwrap --dev-bind /dev /dev --tmpfs /tmp -- startplasma-wayland
eglgears_wayland and nvtop show gpu works.