Resistance to leaf mold is a new thing, and for greenhouse growers like myself, well worth it!
Although I cringe at the thought of how many 'rocks' I would have to grow before I got a nice tasting and perfect textured tomato WITH the fulvia resistance still in play.
Frogsleap, if you use Panzer to breed, I'd certainly be willing to test some offspring for the leaf mold resistance - it's a big problem here whenever we have a normal hot humid July.