I cycled up the west route, and it's still the same as on Street View. Nothing to say that you are on the NCN, the signs have (766) in brackets, and there's nothing directing you to/from Beatty Crescent at the junction with Overton Road.
In terms of safety, due to the gradient I'd probably cycle the route two ways - north up Beatty Crescent then back down Overton Road! (rather than trying to turn right off the main road)