I was given one of these glasses by Nancy Stephan from LCVB, http://www.theneatglass.com/
I have to say I really dislike this glass. It does have similar nosing characteristics to the Glencairn glass, but it is very hard to drink from. The spitton or chamber pot shape with the heavy outward lip means you almost have to turn the glass verticle to get the whiskey from it when it is less than half full. The lip also make the glass dribble when you drink. On the whole, I will stick to a glencairn or brandy snifter and maybe use this for a spit glass - the only purpose I can think of for using this big, awkward glass.