filter flow & adapter types
Below is a fairly good diagram showing the various parts of a typical spin on engine oil filter. When the oil filter element is clogged the spring controlled bypass valve opens allowing oil to flow directly from the outside to the center end without passing thru the filter element.
The anti-drain valve keeps oil in the filter reducing the time it takes for the oil gallery to pressurize. I like to use vertical remote oil filter mounts to eliminate drain back if the valve sticks open, reduce the mess when changing the filter and to allow additional cooling.
Illustrated below is a filter and remote mount showing the flow thru the filter from outside coming from the mechanical pump to the center and going into the oil gallery.
There is no check valve in the filter except the anti-drain valve. If a sandwich adapter that fits between the block filter adapter and the filter has an external port that connects to the center then oil entering that port will be forced by the anti-drain valve to flow into the gallery.
The GlowShift adapter you linked to has 3 or 4 external ports (depending on what the description states and what the photo shows) that appear to be connected to the outer path.
These would work for oil temperature and pressure sensors prior to passing thru the filter element.
The Canton adapter you mentioned has only one port that also appears to be connected to the outer path.
According to Canton:
"Oil input sandwich adapters and oil cooler sandwich adapters are not interchangeable. Oil input sandwich adapters access oil flow as it passes to or from the filter and provide a port for installing items such as an external oil pump, or an Accusump. An oil input adapter will flow oil to the engine whether or not the oil ports are used. An oil cooler sandwich adapters diverts the oil flow and provide an in and out port for installing an oil cooler. The design of the oil cooler adapter requires the oil exiting the adapter to return back to the adapter, you cannot plug off a port in an oil cooler adapter."
I have not yet found an adapter suitable for what you are trying to do - mount the filter on the sandwich adapter and prevent backflow to the mechanical pump.