Hi Rick,
I have heard the same, and can see it may be an issue.
By the very nature of it's lining I tend to
only wear them when below about 25f, and I don't do any vertical stuff
in Michigan, just hiking, skiing and snowshoeing.
To me it is the perfect winter shell and would have no problems using in moderate rain for a couple of hours. I have used them for a couple of days in the English Lake district in continous rain and had no issues at all. I could see it getting overwhelmed in a torrential Armageddon style downpour though.
I can use them all day long and not overheat by using the outstanding venting.
Not sure if you came across the saying in London yet, but people see Paramo as to be like Marmite, you either love it or hate it.
For me it works great but for others it may not do so.