Low pressure line is same as suction line.
YES it will work there......the fluid flows through the whole system, so it will be filtered just as well as it would be on the high pressure line.....however you don't want to subject the filter and its connections to the high pressure.....which is the reason for the advice to put it on the low pressure line.
As Gary Allan mentioned.....if need be, put some extra hose in to accomodate the filter.
Avoid super sharp bends in the line, and having the line rub against hot/sharp things.
That is what I did on my windstar.