I have made a damage calc for this. Though checking Iluyanka wasn't a primary function of this, so it's not very fluid for it...It is possible that it'll get a good FLB in the future, though this is probably like 1.5-2 years away. DMM FLBs do compress double-skills into one skill, and then give a new, third skill. If this third skill will be Assault, then the weapon will be good as FLB.
So if you're looking at the far, far, FAR future, then go ahead and grab it. It's just useless until FLB, and maybe even after.