Wraps of Unarmed Power and Evolving Magic Items

In the new Arcana Unleashed book, under the section about the Simple Magic Item Evolution, is there any reason why the wraps of unarmed power are not listed along with the +x items? Could this just be an oversight or has anyone found any reason why its not been included? Easy to overrule as a DM and just curious if there was a genuine reason that I cannot see.

I mean, if you want a reason, you'd have to get a designer to answer.

As a DM, you can always just apply it to whatever item you want.  I don't foresee any issue here.  Just remember that the evolving wraps should require attunement (when straight-up +x wraps do not).