The phaser is more of a cross between the TOS phaser and the ones seen in The Cage, the triple emitter is straight off the ones from The Cage and I, for one, like it. It actually fits the era, it looks like a transitional weapon, something that's more advanced than what we saw in The Cage but not quite as advanced as what we see in TOS.
It also successfully incorporates a elements from the phase pistols in Enterprise. Odd how they could do such a nice job with the Starfleet props but completely botch the Klingons.