Damn glad to see that yes won out - I can't think of anything you'd lose from installing it, especially with the fact that it fixes at least 2 engine bugs that completely change gameplay as a result.
For those wondering, weapons that had the Ignores DT/DR or Bypasses DT/DR effect didn't actually ignore or bypass DT or DR, meaning that if you took that scary looking Ripper out on a guy in power armour, he'd just laugh at you and shoot you in the face. Now you can actually take on deathclaws with a chainsaw like the madman you've always wanted to be.
The second fix is pretty major as well - weapons that fired non-hitscan explosive projectiles (e.g things like grenades, missiles, mini nukes etc.) would do no impact damage whatsoever. If you want to test this, set the mini nuke explosion to 1 damage then score a direct hit with a Fat Man on a target. The Fat Man should deal 400 damage from the impact alone, but due to the bug mentioned, it will actually only do 1 damage...from the explosion. JIP LN fixes this so that now scoring direct hits is a very viable strategy, especially with timed mini nukes lol. This also means you no longer need mods that work around this by increasing explosion damage - something that may be considered OP as this means targets would take more damage standing on the edge of an explosion.
I wonder what other engine bugs there are in the game that could be blessed by the hand of JIP LN...