I cannot think of any mechanical filter that will withstand freezing temperatures if the water is allowed to freeze inside the filter itself whether the filter is a ceramic or fibre glass. The Lifesaver filter element will be the same so the same precautions against freezing need to be adhered to.

The Lifesaver filter appears to be the only mechanical filter on the market that is also capable of filtering viruses due to the very small 0.015 micron filter size as compared to other well known and reliable systems such as the Katadyn Pocket water filter which has a 0.2 micron Silver Ceramic filter cartridge. The Katadyn Pocket filter fact sheet also mentions that the mechanical 0.2 micron filter can also filter radioactive particles which are larger than 0.2 microns. The Lifesaver will probably have even better performance filtering radioactive particles greater than 0.015 microns. A radioactive particle at 0.015 microns diameter will have 2700 times less radioactive potential than a 0.2 micron particle.
The Lifesaver system is probably the best CBRN water filter commercially available. Even the bacterial reduction performance shows a very impressive Log 7.5 reduction. In reality that is getting to the point when no individual bacterial can be measured passing through the filter. Other conventional filters including UV systems such as the Steripen are being measured in Log 3-4 reduction i.e. Hundreds to thousands of times less effective.

Filter lifetime seems to be impressive as well available in 10,000 and 20,000 litre capacity. For a family of 4 that would mean over 660 or 1320 days continuous use. (assuming 1 gallon of drinking water per person per day).

When comparing the cost of the Lifesaver Jerry Can against other filtration systems such as the Katadyn expedition or endurance grade filters with the additional expense of a UV system that would needed for the deactivation of viruses and even the water carrier itself i.e. the actual Jerry can itself then the Lifesaver Jerry Can is probably very cost effective considering the claimed performance.

It also looks to be an excellent car or vehicle camping water filter and storage solution as well as a device which can be tucked away unused in the garage or basement ready for a domestic water emergency (domestic water supply availability is subject to electrical power outages in many areas).