The overgrown pulse-boat mess that demonstrates that the best short-range weapon is a long-range weapon :)
In a grid layout city, this thing would be toast. Even in the city/large town I currently live in, you can see farther down the vast majority of streets and avenues than even the AC-2 series can shoot. Terrain topography, hello places like Deadwood, SD, might help it.
And, given the pathetic ranges of IS pulse lasers, this is just bad. Per public data, let's say that a city block in Manhattan is ~80x270 meters. IS LPL maxes at 300 meters range. That's right folks, if your enemy appears on the far side of the street on the long side of the block, better hope the PPC hits, because depending on which side of the street/road you are on, you might not get there with anything else. No amount of pulse bonus is going to help if you can't get there from here.
That all being said, I think that Apollo's Law wouldn't apply to this design. That could be much uglier.