I'm there with you. I have spd pedals on my 'comfort bike' and I pretty much had it down. I broke my leg in June, and now I'm just getting back into riding. the spd pedals aren't bad on that bike, but I have a lovely new road bike I'd love to ride with one-sided road pedals. I'm finding that I have more trouble clipping in than clipping out (and I'm scared to fall on the not-quite-completely-healed left leg so I find myself clipping out of both because I'm afraid I'll lean the wrong way so I know I'm likely developing bad habits). So far I've not fallen, but it just still feels uncomfortable. Luckily, even if I'm not clipped in there is enough pedal to make me go (and for some reason I can clip in no problem with my bad leg, the other just takes a lot of effort and this is the one I'm leaning on anyway so I better figure it out), and I'm getting it down with practice and hopefully I'll be more confident soon. I'm sure with both of us, its just a matter of practicing and developing muscle memory.