I don't argue with epoxy it's your business how deal with.
at beginning epoxy is sticky but in a few weeks epoxy become more rigid and prone to detachment.
for both solutions, even epoxy have infinite strength, final strength uf usb port is provided by adherence of copper layer to epoxyed fiberglass substrate

for those who want use epoxy : try to get stretch foil . thickness is only 23 microns
http://www.dapas-konice.cz/images/stretch.gif
put it over plug and insert into usb socket. doing like that you protect contacts and put a polypropylene layer between epoxy and plug. epoxy don't adhere to polypropylene