Pros
The opportunity to work independently
Cons
5 years ago this was a semi-profitable side hustle with respectable commissions and bonus offerings. However, that's long gone and SC all but abandoned whatever street advocates they had. Bonuses were cut 50%, support was non-existent and it became very difficult to get cards, which was needed to make money. Most importantly, the biggest competitor for a street advocate became SC itself (via app, promos, direct marketing and media all which exclude street reps).
Unless offering a base, I HIGHLY advise anyone considering SC, or any of the other 30+ competitors, too stay far away. The ROI is non-existent.