It's an Omni, and ammo is interchangeable, omni status or not, so go ahead and pull the cluster ammo for regular slugs if you want another hole puncher. Want more ammo in general? Downgrade the LRM to a -10, drop down to one ton of ammo for it, and add another ton of LB-10X ammo, along with half a ton of other pod-gear.
In almost all its configurations it's versatile, fast, and durable. Just don't expect to out-damage a dedicated brawler, or out-range a sniper.