I have both the Eb and the Ibanez JPM models. Referring to the comment that they are "so different." They are not that different at all. The body shape and the arm scoop are the single biggest differences in overall design philosophy. They have very similar neck profiles, the same switching system, and definately sound very similar.
Sure, the EB quality is quite a bit better, but the MM is basically a reworking of the previous with added bells and whistles. EBMM was willing to take a few more steps in marketting and with what they built than Ibanez was at the time which made thier offer very attractive to John. How many people besides myself have wondered if the Ibanez Piezo equipped Edge trem was devoloped with John in mind? From everything I have read, be it Paul's comments, John's comments, or even people who have talked to him backstage, Ibanez and John were working well together up to the end and EB stepped up. Hense the two years in a row of the camo JPM4.... I felt then that there was something big in the works and as history unfolded, it seems EB just beat Ibanez to the punch.