Wheezy: I have it and it is beautiful!!! My plant is young and bloomed heavy last year so I doubt it will be shareable but you never know. Sometimes they surprise me in the Spring with large amounts of increase. I agree, it's best though to reach out to Winterberry. I believe they take orders starting around Thanksgiving, if I recall right, so I would reach out now and find out!!!
Also, I personally don't mind getting tree mail requests from people for Irises but I do say No a lot because I lost a few prize(in my view) Irises by sharing too soon!!! In addition I admit, I just have not taken my Iris growing skills to the point the majority are Thrivers. It's a goal but I am not there yet, so small or no increase is the cause for many No's. Also I am much more apt to share with fellow chatters who frequent this forum. I am just too busy to want to sell right now but I don't mind sharing with Forum friends(fellow chatters), at all!!!