I would check the mature height of the clems. Vagabond is shorter but still 4-5 feet
Biju is only 18-24 inches high and a good one for pots.The clems are really deep in the soil and I compost them so winter cant do too much harm.
The containers thay are in are 18-20 nches in diameter and in a protected corner with the deck on oneside and the woodpile on the other.
Google "clematis for containers" see what comes up.
