I'm about halfway there on the scarf. I was worried at the start that the colors were pooling a bit, but realized that the mistake was mine since I wasn't bringing yarn A in front of yarn B and vice versa on every other row.
Once I straightened it out and re-read the directions, then I was set.
The picture below is where I am at today.
I'm almost done the first two skeins, and I've got some built in knitting time this weekend, so I should be on to the second two skeins by Monday.