I have been doing okay at practicing/learning to clip in, but I can't help but feel it'd be easier with double-sided pedals. To second KingTermite's question: for people who have switched from one- to two-sided pedals, are the double-sided ones easier to get into, and do you prefer them overall?
I have used both single- and double-sided pedals extensively. Basically, I find the one-sided combo pedals have many advantages over the double-sided kind, and few disadvantages. After a few weeks practice, I was able to clip into my Shimano 324 knockoff pedals almost effortlessly, regardless of which way they're facing. I almost never miss double-sided pedals.
Should I just accept the fact that for the hypothetical trips around town to buy a gallon of milk, I'll be wearing my shoes/cleats and not my tennis shoes?
... And the ability to use ordinary shoes occasionally is the huge advantage of the combo pedals. Sometimes I go out to dinner or movies with my girlfriend, and wear dress shoes or walking shoes while riding my bike. Sometimes I run a quick errand at lunchtime, or ride my bike around the block. Much more convenient!