my gut feeling is this company acquisition deal is THE hold up to this whole US availability thing. deals like this don't happen over night. it takes months of back-office work. i'm guessing Mitas has been planing their big picture approach to US market penetration (with these 2 companies they now have tires to supply many different markets) and that's why things have moved so slowly.
I have emailed Jiri back and forth and he has been very helpful and forthcoming with info to me the best he can.