iP88 isn’t the first dual-dock clock radio for the iPhone; iLuv actually debuted such a product one year ago in the iMM173, a nice enough system that wound up getting the company banned from future iLounge coverage for repeated astroturfing comments. iLuv took a short cut with iMM173 and only made one of its two docks truly iPhone-compatible—the other brought up the infamous nag screen—so iHome’s version is designed with two…