The riverside walkway is quite expansive. So often developers give nothing more than a pavement's width of space and stick a large fence along so no soul would wish to loiter! The designs I saw at the planning office extended back between the buildings and had seating areas, water features, and lighting built into the paved areas, as well as wind turbines.
Admittedly some of the space between the buildings was private gardens. Also developers have been known to cut back on features during the actual construction phase, or maintenance companies don't keep all the finer features after the properties are sold...but..one lives in hope.
There is a website www.chambers-wharf.co.uk
There are a limited number of images on the webpage, if you download the newsletter, there is an image of the walkway on that.
The first post in this thread actually concerned the 'new thames vista' which I think shows the value of new public space. One of the best things about Southwark's redevolopment (albeit due to modern regulations) is how the Thames is being opened up. The north bank really suffers from the lack of river access.
Chambers Wharf is aligned at the same angle as Butlers Wharf. Lang Rabbie, you are quite right that there is a lack of sun light, but this is the case on the south bank from the Tate Modern to Chambers Wharf.
I do see your point about the height of the buildings, but there are plenty of tall buildings between Chambers Wharf and Tate Modern, and that stretch of river is far from a nuclear fallout zone (which some might argue Chambers Wharf resembles in it's current state). You get some lovely sunrises pretty much all year, and in the summer, some nice sunsets too. Believe it or not, after a long winter, and following our two weeks of summer last year, the sun does rise above a 12 storey building from time to time! It's never going to be Sydney Harbouresque by the Pool of London, but it will be a nice stroll (or 'morning constitutional').
I still think a vote would favour the Southbank's river frontage (with it's shadows) to Wapping's lack of walkway (with it's sun-trap beer gardens along Wapping high street, where I've lost many a lazy summer afternoon.)