Maybe not exactly the same, but for what it's worth........

Last August, while in Maui, went from sea level to ~8000ft (cycling) and didn't feel anything...however, the day before when we drove up to the top of Haleakala ~10k, walking up steps got me pretty dizzy and winded and I'm sure it was from the altitude change.
I had read of other cyclists having headaches and such while climbing Haleakala, but we didn't experience any issue...I think it was the slow pace we were traveling.