I went ahead and ordered the KeepCup in 12oz, cork banded.
Is it travel friendly? Seems to fit in the seat cup holder of the car just fine.
We're not heavier drinkers of coffee in the family, so, it does not need to keep warm for a long amount of time. Just enough to finish 1 cup in the morning/afternoon.
I like the fact that I can just wash it and reuse like any cup I would use at home.
Wish it had a handle though, so, hopefully the cork band is sturdy for holding with one hand.
FWIW I'd still be interested in this though:
Is there a travel mug that has porcelain interior and stainless steel outer finish? With a handle is an added bonus.