Is it possible to post a photo to give us more of an idea?

but in the autumn you will be left with bare stems and then it will look 'ugly' again.

A photo would help. is the slop stable? and how 'vertical' is it. What about dwarf heathers evergreen hebes, ajuga the smaller evergreen periwinkles [vinca].

Alos if the garden was levelled why is there a slope? I cant visualise it sorry :o(

If the gradient is very steep, and its 2 metres high, you'll need to consider much larger plants planted at the top/ halfway down so that the roots will stabilise the slope, or you're at risk of the soil sliding downwards. Large shrubs or small trees probably, or a spreading ground hugger which roots as it goes, something like Cotoneaster Queen of Carpets, but without seeing the area, hard to say for sure. Certainly, climbers planted at the bottom will do nothing to stop erosion, and will look awful in winter.

If you use wire netting have you thought how you would plant through it? For a slope as high as that you will surely need planting on the slope not just top and bottom. None of the climbers you mention is evergreen by the way. If you use membrane it will be visible for a long time and look dreadful. Alternatively could you lose some of the level area and reduce the height and slope of the bank?

Is the slope in full sun? You could cover the whole thing with ivy if you like but you'd need to plant it at various heights.

Photo please as requested. I'm assuming that you have had sloping ground cut out rather than filled in, either way it would be better to have a terrace created rather than a slope:
- a terrace is easier to maintain
- a terrace is more stable than a steep slope
- a terrace offers more planting options
- wide terraces give you lots of options for 'hidden' corners
- terraces give you options for nice steps

Photo 25 of http://www.shelterness.com/50-small-urban-garden-design-ideas-and-pictures/pictures/9278/ makes me long for a steep slope in my yard (don't think my little raised beds reall cut the mustard)