Got lucky and randomly received them a couple of weeks ago from a legendary engram that dropped off of a Moon dreg, I've been using them ever since. So badass looking, just wish the bonus ability had to do with more tripwire grenade damage as opposed to duration. I've noticed many enemies will stop and "wait" behind an active grenade sitting there if they see you throw it ahead of them or if you don't throw it directly onto one of them (my usual tactic because of this), making the bonus largely useless to me unless your plan all along was to cause them to stop for a clear headshot. Still I love these guantlets, the special weapon reload boost is nice too.