Had both recent ELC pre-war and BOB.
The leather/fleece nowadays is not as " correct " as it used to be.
Next winter I buy an AERO BOB , 2 sizes bigger than I need and give it the water treatment to shrink and " vintage " it...
So far the best alternative IMHO.
Sizing up is the only way to get an Irvin to really look good and 'work' - trapping air and warming it up like a sleeping bag.