Occultist: Conjuration Resonant Power - useless?

[Rageling]

As the title says... Is this power actually useless?

I love the class, but once I re-read this entry, I face-palmed.

Based on invested mental focus, it increases your effective caster level for Conjuration Spells measure in rounds-per-level, for the purposes of duration only.

At a glance, that sounds great!
What's that? Mage Armor can be 2 hours at 1st level? Sweet!
Wait. ROUNDS per level spells only... OK, so which ones are there?

There... aren't any?

Correction. By level 10, there's ONE: Major Creation.
Even then, that's only for rare metal items.

Literally everything else I'm seeing before that.is measure in 1-minute, 10-minute, 1-hour, or 2-hour increments.

What am I missing here? I have to be missing something here.

[PossibleCabbage]

I think it works on glitterdust.

But traditionally this is solved through one of the following:
1) Hand your conjuration implement to someone with summoning spells.
2) Be a haunt collector and replace the resonant power.
3) Ignore the resonant power completely.

[Rageling]

Forgot Glitterdust - but yeah.
You'd think there would be several more choices.

[Zwordsman]

Would be really nice if it actually extended things at all levels honestly. Not sure how if any problems that would bring up really. Other than the normal issue of "hand the focus thing around the table to use "which isn't really much of a problem over all.