I ordered the Saguaro Forestep in White size 40 as an exchange for my previous choice, the Saguaro Luck in Beige size 41. Based on the previous shoe (which I returned) being absolutely enormous in the toe box area, I figured I could easily size back down to my regular size 40 and still have some wiggle room. Given the new style is from the same brand, I figured they would have a similar fit. Wrong!
The Forestep style runs small, so if you're uncertain, size up. Very confusing sizing between styles within the same brand, but the overall design is better on the 'Forestep', as it uses decorative paneling to create an optical illusion of a slimmer toe shape, compared to the clown-shoe look of the 'Luck'. I do think there is a significant actual difference in their last shapes, since when wearing the 'Luck', I could fit two extra fingers width in the toe box next to my foot, and one fingers width at the tip of my toes too!
Overall pretty happy with the 'Forestep' shoe, just a shame it's too short and squeezes the tips of my toes a bit. I used up my free exchange option to find this out, but would still consider buying the next size up.