I don't think you want to give up ilvl for crafted + melds on any left-side stuff. Secondaries just don't make that much difference. Plus you lose out on strength that way too.
So use it if you have cash and aren't going to have the soldier/coil drop soon.

There might be a case for i90 melded accs since you could meld str or vit onto them, depending. But those don't exist so that's just hypothetical. (I am quite mad those don't exist)