If you get an Skrill account in Dollars, and play on dollar casinos, you are not victim to exchange rates, which use to be poor at Electronic purses. As I have to buy Euros using SEK, and if the casino expect dollars, the Euro Changes to dollars, the Changes in both directions take a share.
I deposed SEK 1000 at Skrill, and used Euro 100 at the casino. I have to win at least 5% to get the
If you choice a purse, check the jurisdiction. Living in Europe Skrill have to follow regulations and consumer regulations from EU. Neteller, is regulated on Isle of Man, and not obligated to follow the regulations.
Living in US they may try make it difficult to use some casinos. Using bitcoins can help.