Yes, Scuzi - it probably is, but when the river is flowing fast from left to right, it makes little sense to swim right to left.
Like 'Airbus', I would prefer the simple, quick 'Climb unrestricted' for 'up now' and 'climb' for 'stick with the blocks' rather than a cumbersome 493 re-statement of the blocks with a clearance.
Like others I can only see troubles if we stick it out as we are.