Is it a bad choice? I haven't timed it, but I imagine *if you know where you're going* it could be quite a fast route!
@swt_passenger I'm not old enough to remember the coloured lights! Is there a photo of them?
@Mojo Is there really step-free access to the Bakerloo at Waterloo?! Where's the lift up to the platforms?
https://www.ianvisits.co.uk/blog/wp-content/uploads/2015/07/bank-monument.jpg
You've got to walk parallel to the travelator, then down an escalator. Against that it is easy to get out at Waterloo from the W&C, though getting down to the Northern is down two flights of escalators at KX, so you lose more at that end.