No. the host Linode for USMJ e-commerce website have been hacked many times and squarespace.com also have an e-commerce kit or online store kit.
USMJ did stated that "The launch is expected before the end of December." <---- i see what you did there. They didn't give a specific date besides just "December" so it can be next year? 2 years? 5 years? or never.