Regarding the payment methods:
Each currency will be upgraded using the current Bitcoin / Litecoin / Dash rate.
If we take the example regarding the bitcoin:
This will be converted automatically. If you have your balance in USD, and you make a payment of 0.5 BTC, the value in the balance will increase by half the value of the Bitcoin.
Suppose the Bitcoin exchange rate is $ 18,500, and you make a payment of 0.5 BTC, your balance will be $ 9,250.
This value of the fiat remains intact in your balance sheet, and the price increase / decrease has no influence on it.
When we have implemented multiple payment methods, you can request a withdrawal from the method that also included a deposit. Bank transfers are always possible in any situation.
If you want to withdraw funds to a payment method, then you have to make sure that you have made a deposit with this payment method before in order for us to approve the withdawal.
so in other words it depends on what did you deposit? In instance I deposit using Skrill and I choose mBTC as a currency then I would only be able to withdraw it through Skrill or either Bitcoin or Skrill?
It depends on what you prefer to play with, presumably. If you create an account in EUR, you can still deposit with Crypto and you can also choose to deposit with Skrill and other traditional payment methods.
The advantage is that you keep the value of the bitcoin in EURO. You don't have to worry about a price change, as the current rate has already been used in the conversion.