The Snipetron Vandal and Primed Chamber event was a pretty cool idea, and pretty fun too. Snipetron Vandal is really nice and was pretty easy to earn during the event, but isn't overpowered (there is a sniper with 2x its base dmg in the dojo weapons) so making it exclusive isn't too big of a deal, still would have preferred a skin to prevent community backlash.
Disclaimer: The following is said under the assumption that Primed Chamber is exclusive. However i have seen quite a few people who