i have a sample madison jar from www.YesSupplyCo.com and i haven't tried wicking it yet but it don't look to be very tough and the glass is very sturdy with a nice cap, i still have the old J50 and i will try to pour today and test tomorrow if you want the results i'd be more than happy to share, let me know, i'm going back to either IGI4627 or 4630, just trying to use this up as i hate waste