Ahhhh...
You need to weigh up the 'tube ticket cost / walk vs having a seat all the way back' pros and cons then I suppose. :-)
Aye... but I'm a good boy. ;-)
Aye.
I'd end up sans licence / sanity if I relied on that route everyday.
Aye... not so bad when you're leaving that bit later though.
I've now discovered that if you drop down that bit lower when you get south of the river from Waterloo Bridge, there's a pretty clear / quick back route that skirts you in parallel with Jamaica Street etc. until it meets up with it near Rotherhithe.
For one thing, the lights don't seem to be so deliberately laggy, so you maintain more progress.
-- JackH