You could do my idea and stuff the low profile Bax or SuperBax cable the i4. No modifications needed. (Linum Estron company cables)
Super-light, no earhook, and can conform to the ear more easily.........but....is kind of springy and really depends that you twist it formally with an over/under twist when putting it away.
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The picture above are with the 4-stranded SuperBax cable.
But if you go for the cheaper Bax cable.
The 2-strand version, the Bax cable is so light I can wear it with the lcd-i4 with the cable down and it doesn't pull off.
I only need to use the concha-earfins with the Bax cable. Very fast to wear with a quick thoughtless twist.