There are several people here who think so.
People think that the almirian crusader armor fits knights because they were once almirians.
One popular theory is that after Almire was destroyed they left in the Skylark and became the Knights.
And while snooping around in spiral spy may support theories, I can't say no more, because of Eury's policy and the OOO laws.
NO SPOILERS PLZ
No....
How would that even fit with the plot?