I have two H.Petiolaris, one climbing a 6ft wooden fence and the other covering the side of a wooden shed, both north facing sites. They do very well where they are.
I don't know about the other climber you mention, however, but someone else will, I'm sure.

Oh thank you so much ,I love them, but all you ever see is them growing up walls .I've googled to death to see if i could see one on a fence .Did it self cling reasonable well Ojibway or did you train it and may i ask if its hard to keep in boundary ?

I didn't have to train either of them, Susie. They just grew up on the fence/shed by themselves. The only thing I do is to prune away branches that grow outwards and trim the tops to keep them to the required height when necessary. Oh, and I trim the shed one at the window, because it grows over that, too!

Great news and thank you .Decision made :-)

You're welcome!

Just before you rush off to the Garden Centre, check out schizophragma hydrangeoides 'Moonlight' - it is related to both the other plants and has the added bonus of blue-green leaves

I agree, it is a very good plant. I can't grow it here (have lost two) but I wish I could!

Ohhh they do that in pink too Andrew ! but this is for a fence that I'm not sure gets a fair bit of east wind and it also has a group of cornus siberica variagata directly in front if it .Unsure on how the grey blue leaves would look together with that .I'll ponder though because it is stunning :-)