What makes Keos hard to clip in is the cleat doesn't easily move across the pedal when not clipped in, so you can't just slide it forward, or back, a little until it clips in. Instead they tend to catch and snag in all kinds of positions, and when you lift it to unsnag it so you can slide it forward a little to clip in on the Assiomas the pedal very easily rotates - and is now upside down. It's also hard to tell when the pedal is upside down, there's very little difference in feel. For me this means if I fail to clip in the first time, which might happen 20% I end up having to look down to see what's going on. SPD-SLs on the other hand after you rotate the pedal a little with your toes and place the cleat on the pedal it easily slides forward and locks in.
__________________
"This 7:48 cycling session burned 5933 calories. Speed up recovery by replacing them with a healthy snack." - Whoop