This route (and the improvements to the path beside the tennis courts) has permanently changed the way I go from Marchmont to the bridges.
I'll now follow the link route as far as Clerk St because it avoids the Forrest Row blender, right turning into Chambers St and filtering past the queue of 8 cars at the bottom of Chambers St.
I'm sure it's slower but is a lot less stressful to make a single left turn onto Clerk St than all of the above.