hi AgX
i would have been Ok but i don't like heights too much ..
i've been in similar situations,not climbing up enclosed ladders from the ground
but on the roof of a TALL office building, having to climb up a 20' ladder to the top of the HVAC unit
which took me above the parapet so i could take bird's eye views of the city below. i didn't have a helmut

i didn't so much mind climbing up the poorly secured ladder or being onto of the building
( it was february i think, and windy and cold ) but climbing down i didn't like.
my escort didn't speak english and wasn't too good at holding the ladder .. it was secured to the HVAC unit with a coathanger
i also photographed from the edge of a drained quarry 300+ feet up ...
i was secured in with a rope that could hold a 15000lb dead drop ( or so they said )
and wasn't permitted closer than 10 feet from the ledge because it wasn't stable ...
not to mention at one point i had to LUG a pair of 4x5 cameras ( in cases ) and my pal with a tripod
across what was called a "grout wall" even higher up .. no security ropes just wobbly rocks and like a 400 foot drop ..
it saved us a 45 minute walk around the quarry. the 2nd time i walked around and watched my pal on the grout wall. ..
and the local teenage kids who played at the drained quarry and invincible ... RUNNING across the grout wall ...
it wasn't the easiest thing to watch ...