These two payment methods work completely differently. With e-wallets, you would have to transfer to funds from your bank account to the virtual wallet and then send the funds from the e-wallet to the casino account.
On the other hand, Trustly is much simpler to use — you only need to input the amount you want to deposit as well as your banking details. Also, you won’t need to leave the casino’s website during Trustly deposits, which isn’t the case with e-wallets. Unlike most e-wallets (Skrill, Neteller, PayPal), Trustly is almost never exempt from casino bonuses, meaning that you can use the provider to claim amazing welcome bonuses.