I have the grey wolf with the wind blocker. I went that route because it can be custom ordered to fit, and I have a "non-standard" body type. I wore out the back of the pants above the pockets in about 7 years by carrying my lone wolf climbing stand (rough cast AL) (5-10 miles per day X 30 days hunting a year X 7 years). Cost to repair was something like $30. I love mine and would go this route again, Warm with just a cotton t shirt base layer last fall in WI, top of a ridge, 19 degrees, 30 mph winds, sat all day. I would prefer filson if I could get it custom made to fit my dimensions because I think their wool is superior to all the others, and I know alot of guys who love their KOM and SI.
Mike