Just picked up a 2MM full wetsuit cause it was $40 brand new with tags still on. I live in MN & mostly run WW rivers. So, I've read about what water temp you can handle with different thickness wetsuits, But those guides are for extended exposure. When I do swim, I can usually get to shore in under 5 minutes. So the question is, could I handle colder water temps with a 2MM suit since I can get out of the water fast?? Or is the problem getting cold AFTER I'm out of the water. In other words is air temp the issue & not water temp with a quick swim ?