It’s fun to use if you like swords (which I do)

If you're a sword fan, it's nearly mandatory. I almost never unequip them. Timed block doing no damage, but healing you, means you can tank anything and take zero damage given that enemies target whoever's closest. Also incredibly useful for reviving teammates. Works very well with bubble titan. It's not as much damage as a full offense build, obviously, but if you want to feel like an invincible tank and want to have swords serve more purpose than suicide weapons, they're amazing. Just gotta git gud at timed blocks, and you can see their intended purpose to provide Titans a way to actually tank things.

Destiny fun police has a pretty funny video covering it

I just picked it up. I've discovered if you have a double sword scavenger mod and a sword ammo finder mod on a helm it is pretty easy to always have ammo in PvE.