Regular Sebenzas were actually the backup for lightsabers for many years. The Jedi switched to double-edged MT Combat Troodons briefly, but switched back to the Sebenza as a backup. My theory, the simplicity of the Sebenza brought them back around.
From what I understand, they are looking at the Umnumzaan as a replacement backup, now that the Regulars have gone the way of the Gundar, but they also considering a forthcoming CRK folder that has an integrated lightsaber takedown tool on board; there was also loose talk of full grip checkering also. At one point, they were apparently considering altering construction of their sabers such that either an Umnum or Seb takedown tool or 5/64 Allen wrench would be compatible for saber takedown and crystal replacement/tuning. I do not know any further details, as communications between parallel universes can be perilous given the time difference.
More later...
Professor.
