First, you didn't actually answer the first question; it's not yes or no, it's explain how much you've seen or read.
I'm thinking he's a bit overloaded with weapons. Also, don't you have the sword locations mixed up? A katana is meant to be drawn from the side, where as a long sword can be drawn from anywhere.
Next, I'd like to talk about the actual ammunition as well as the blades of the swords. What exactly do you mean when you say they're laced with holy water? You can't really lace a bullet with anything, considering some sort of liquid would just evaporate when shot. Does he dip these swords in holy water before he uses them every day or something? If that's the case, it sounds like they'd have rusted by now.
Your personality doesn't tell us anything about him outside of how he feels about heretics and music, really. Give us some detail on how he interacts with other Iscariots, Maxwell, stuff like that.
And here's the bio. First off, why do Russians have crusader weapons? Not only were they not even a Christian country during the majority of the wars, they were attacked themselves sometimes for converting to largely Eastern Orthodox (which, as usual, the Catholics considered to be heretics).
Next, how does he manage to hitchhike to Rome while carrying a bunch of armor and swords? I don't know about you, but if I see some guy hauling a bunch of armor with his thumb out, I'm NOT stopping to pick him up. I don't get it.
The part about Anderson randomly accepting him into the Orphanage after he showed up on the doorstep is...perfectly fine. But the part about turning into a regenerator at 18 isn't. Not just anyone can survive the procedure, so there's that, but you're also adding on that he's just a kid. He has to be at least a few years older for that to happen to him.
Alright, so he bought some stuff from a German guy. What's so special about the sword if he just had it reforged and whatnot after he got home? Also, I thought that was passed down in his family.
Okay, that last part really threw me for a loop. I...don't really understand what happened there. So he fights a bunch of vampires, gets his eye scratched (which, since he's a regenerator, should have just healed up), then forced to be their slave, then breaks out and somehow gets all his shit back and kills them all. Am I getting all this? I don't really understand how someone with 2 guns, 2 swords, and has the power to regenerate from nearly anything can lose to a bunch of low level vampires, even if there is a bunch of them. But let's put that aside; I really don't understand what this story is there for. Maybe I'm over thinking this all, but I'm just trying to process what this story adds to your character.
I'm usually not too picky about RP samples, but this was...I'll just explain. Alright, so he's slaughtering a bunch of random vampires. That's cool. There's an extreme lack of detail here though, basically meaning your story can be summed up to, "I ran up to a bunch of guys, shot them, then cut them in half." Also, where did the horse come from? It's very possible I missed that, but I don't remember hearing mention of one. Next, we have him killing some ghouls where you throw a katana. Not only is that a terrible idea, due to the high chance of damage to the sword, but it's no where near balanced in a way to be thrown. It's not that kind of weapon.
Not to be rude, but your bio and especially your RP samples concerns me, in the sense that I don't know if you have enough control over grammar to be able to RP here. I had a tough time reading your sheet, and a nearly impossible time reading your RP sample. Please take the time to check for grammar errors before you post things, as it makes it very difficult for people to read.