I am still in the milder phases of PD and do not have major difficulties with gait or balance. No strong need yet for assistance with walking. But I found these video demos of use of a walking staff to be enlightening and persuasive, and will save this for future reference. Perhaps someone here has first-hand experience they would like to share? (Disclosure: I have no connection with this walking-stick provider.)
P.S.: Hey, a walking staff also makes you look like a rugged, outdoor type! Other things being equal, it sure beats the geriatric impression conveyed by a cane.