I'm just part of the latter, as I don't have nearly enough classical education to feel strongly about the 'L.' (Although I must have been a little convinced, because in my Desire ficlet, it calls him "Aziraphael" on purpose.)

I read a comment once where it was said, So Aziraphale is a bastardization of Aziraphael? But that's okay, because Aziraphale is a bastardization of an angel.

Something like that anyway. I bring it up 'cause it's funny.