My patio clems are all in pots Nightingale but they only grow to about 4ft. One of the Montanas would climb quickly and cover an outhouse but I'm not sure if they would survive in a pot as they get so big
‘The secret of being happy is being obsessed by something’ – David Bellamy
They're doing better than mine I must say, this has been my worst year for a while with them. Still don't have any flowers on my clems and I've nearly given up on them. They're starting to put out buds 'tho even 'tho they're group 2 and should have bloomed by now.
Sods Law Auricula if you ignore it will blossom ;D Nightingale you could have a word with Plocket she is our Clem expert and see which will do best in a container for you, hope the one you got does well though.