yes, I have experience with that set. I have the set (or a similar set) the OP posted. I did not buy the outriggers or the safety cage (Menards didn't sell them at the time, special order only). you don't really need the outriggers for just 2 high, and I made a cage from scrap that I had.
I paid around $250 for both. I got tired of renting them every time I needed to paint or replace bulbs in our 2-story foyer. obviously the price has gone up a bit but you can still find them cheaper.
as far as usefulness, they are not "real" scaffolding, they are considered indoor scaffolding, but the quality is fine and they are easy to put up and maneuver by yourself. that is what the rental place said when I first rented them.
I have used them to put up my ceiling and insulation in the polebarn, drywall ceiling in the basement, used outside when I roofed my shed, and attached a set of foldable legs to one of the platforms since I never use two. makes a nice table...