I do the continuous grain thing on boxes but haven't really applied it to casework yet.
Realizing this isn't a "critique" thread and it's a very small snapshot, on the panels you show in the first post Brian, I might have flipped the right and left panels over to reduce reversing grain jointed with straight grain. Sometimes there's no choice though, unless you have an unlimited supply of boards to select from.
And speaking of cabinet shops, it urks me to no end to see kitchen cabinets (especially in oak) where merely flipping a frame piece or swapping with a neighbour would have made a so much more pleasing line.