Remember to back the adjuster off (on both sides of each pedal) to it's minimum until you get used to the action of clipping/ un-clipping.
That, plus the more forgiving nature of the SM-SH56 cleats, will mean that if you run into problems you'll be able to just pull hard in any direction to un-clip.
Once the action of un-clipping becomes an automatic thing you can tighten them up and think about getting some normal cleats.
You need to learn beginner and advanced un-clipping as I call them:
Beginner - when you're thinking about what you're doing and have time to plan ahead.
Advanced - when something unexpected happens and still twist your foot off to un-clip rather than just blindly panic and forget (this is the one that caught me out.........a lot!).
Tip 1 - When you're pulling away from a junction, particularly a busy one, don't obsess too much about getting clipped in. If you don't get in first go just put your foot on the pedal and use it as a flat pedal until you get away from the busy bit.
Tip 2 - The action of looking down at the foot you're un-clipping will often make you lean the bike over to the opposite side. If you're also slowing down at the time the bike will fall that way! I, and a few of my mates, have un-clipped one foot only to then fall off the bike the other side!!!
