@jbesr1230
I hope someone will see your post who has first-hand experience, because mine is second-hand, based on several conversations with friends who use rollators.
Here are some of their observations:
Couple in their 80's - one with severe mobility issues due to severe hip injury, the other with progressive disabilities from several falls and surgeries while farming - they chose rollators to maintain upright bearing and to limit stress on hands and wrists from traditional walkers (which they still use indoors) They are able to navigate long walks with much less fatigue, even taking a daily one mile walk on flat but unpaved terrain most days. Walking with a traditional walker or canes was less than 1/4 mile. Has allowed us to participate in activities that were previously out of reach. The biggest downside is the size and weight for transporting, but if you have the means, there is a lighter weight folding one available.
Female friend over 90 with severe kyphosis - able to move well enough to leave apartment with upright walker for short walks, otherwise confined to a scooter.
Male friend in his 70's with neuropathy and a bad knee - being able to put weight on forearms and be upright allows walking without fear of falls that happened with walker.

Like I said - these are observational, but if I should need a walker, I will look at an upright one because I have arthritis and cannot grip a traditional walker.