@Tim Gardner: could it be that there's a missing line in debian/rules.d/3-binary-indep.mk?
after "ifeq ($(do_tools_common),true)", you install the usbip client, but the usbipd daemon is missing. I think, there should be a line "install -m755 debian/tools/generic $(toolsbin)/usbipd".
@Tim Gardner: could it be that there's a missing line in debian/ rules.d/ 3-binary- indep.mk?
after "ifeq ($(do_tools_ common) ,true)" , you install the usbip client, but the usbipd daemon is missing. I think, there should be a line "install -m755 debian/ tools/generic $(toolsbin) /usbipd" .