1) I understand that Phantasmal haste is intended to make the phantasms attack more quickly, not to reduce the cooldown on conjuring them in the first place.
I don’t know what the state of the skill was pre-patch, but post-patch I’ve verified that it has NO effect on the frequency of attacks of either iWarden (focus) or iBerserker (greatsword). I haven’t tested on other weapons yet, but I expect it’s more of the same.