Don't have experience of the specific pedals but did make the transition to SPDs on my road bike a couple of years back. Mine are single sided (Shimano A530s) and are fine. There is the odd time I have to flip the pedal over with my foot but it's the exception rather than the rule.
You should be able to adjust the tension on the pedals - I adjusted mine to the 'loosest' setting for unclipping, if that makes sense. I've never pulled out by accident on that setting but it did help me in that there was less resistanace when I did want to clip out.
I struggled a little at first with the concept of feeling trapped in the pedals. Practice clipping in and out leaning against a wall and, unlike me, when you first have a go in anger pick a quiet area where there's lots of space. That way if you are struggling to clip out you can carry on cycling without ending in a heap. I foolishly had a bash in the confined space of my patio. Try just one foot clipped in at first and be conscious of balance (it's no use being clipped out on one side if your weight is balanced on the other). While it's good to practice both feet, when you get used to them you'll prob find you default to just clipping out one foot most of the time. I see others 'track stand' and trying to avoid clipping out until the last possible moment. However, I've got in the habit of anticipating clipping out at lights etc. (either clipping out as I approach, or consciously positioning my foot to do so).
I also changed my cleats to multi-direction SPDs (SPD pedals usually come with single direction as standard, but you can buy multi-direction equivalents). They make it easier to clip out if, say, like me your natural movement is for your ankle to lift as you push it outwards to clip out. They also help in those moments where you panic and engage in random leg movements!! For me, I've had no reasons not to use multi-direction cleats in the 2.5 years I've been using them (i.e. never pulled out by mistake and my rides usually involve a few hills with me out of the saddle etc.)
Typically, problems occur when there's too many things to think about (my most embarassing tumble came when I greeted someone as I came to a stop). As above, practicing in a quiet area with no traffic / people to distract you is a good start. However, once you get into the habit it becomes second nature.
