The size of the pavers and the joints between them will add to the anti-slip...or more slippery nature of the stone. Smaller formats mean more grout lines and less slipping, larger stones with small grout lines are the most slippery. Random patterns or patterns like Ashlar will help prevent falls as well. If you are still uncomfortable...err on the side of caution and use a different product.

It's hard to find a paver that has a more uniformed color like the Stepstone. The Belgard and Calstone ones have all the color variations that look quite busy and a bit "dirty" for a large space.

@galatea310 - did you end up using the Sonorastone for your pool deck? We’re considering it and have the exact same question as you!