Anyone can create a vanity address for himself, there are some tutorials on YouTube.
It is not safe at all to use a bitcoin address that someone knows its private key
We will use split key method. So there is no way to scam
where we can generate splitted keys for all altcoins you have listed for vanity address generation
Split key method is avaibaile only for bitcoin. For altcoins you must trust me ( after you will receive private key,i will delete all and i don't need private keys for altcoins because i use only bitcoin.. )
You will have full controll of bitcoin wallet only but i can guarantee that i will not use the private key to scam you..
Escrow is accepted here but buyer will pay all fees or tips