Where is Ocean gate was charged with dealing with pressures above one atmosphere, this company will have to deal with pressures between zero and one atmospheres. Probably the same outcome will occur at some point.
I also remember reading (but cannot find a reference) that it is easier to design a container for overpressure than to design it for underpressure.
In this case, I think providing a safety valve that fails before the container implodes violently may be a a good option (https://en.wikipedia.org/wiki/Pressure_vessel#Safety_feature...)
My concern would be that the team would cut safety corners until the probability of success just barely rises above some threshold, rather than engineering everything to have as low a risk as is feasible. Is 0-1atm easier than 1-infinity atm? Yes, but that just means you can cut more corners.