Yea, that's what kills the first several days of the post 12/10 period for alot of folks...block is inhibited on the western limb, where it matters, and the west coast takes on a full latitude trough type of look.
That's not a deal breaker....just more of a nuisance that delays things. But these types of patterns out west were planned for in my conceptualization, which is why I explicitly stated that the mid atl likely waits until January to cash in big time, and white xmas along the SNE coast is more dubious...inland SNE and of course NNE good to go.