When I bought this 5000 mm waterproof suit, I compared waterproofness to my tent, that kept me dry for 12 hours basic, partly bit heavy, rain. Top 2000 mm floor 5000 mm month old tent did the job, so I thought that will be enough for the suit.
At least today one hours drive in the basic rain, again, picking up a helmet for colder times drive, i was dry and warm with very light underwear, + 12 c degrees a bit windy as autums does.
Wondering how long, tent and suit, will last to keep water out, hopefully many years.
With 20 000 mm waterproof you can climb mount everest IMO, excellent choice sir.