With the exception of "Excaliburn", all of them can re-equip to a "Noble Knight" you control when they are destroyed and sent to the Graveyard, so that even if you Special Summon a Extra Deck "Noble Knight", by using materials that were equipped with "Noble Arms", those Spell Cards will re-equip themselves to that new monster
In Limited, I can see it being a nice pick in draft
And immersion is the No
Furthermore, each commander can return lands from your graveyard to your battlefield, just like Worldsouls Rage
While Alms Collector isnt quite as good, you dont have the restriction of playing blue and black
C Common Restoration Point Guard X DARK Link 2 [ CyberseLinkEffect ] ATK 1000 DEF - 2 Cyberse monsters Once per turn, if another Link Monster is Link Summoned: This card cannot be destroyed by battle or card effects for the rest of this turn