I looked into this not long back, you see alot of members using e-wallets, I personally still use my visa ill list the pros and cons
Pros of using a debit card!
1) Every casino accepts debit card deposits, i say this just from experience, ive never once been turned down a deposit from a debit card, yet some sites limit there e-wallet deposit options, some might have skrill, others neteller, others paypal. where as with a debit card your guarenteed to be able to deposit.
2) No fees! When i say this, i don't mean withdrawal/deposit fees ( all-tho have seen them for e-wallets, but rarely ) You dont get charged for withdrawing your balance at an e-wallet to your bank account
3) no middleman, when you withdraw back to your card, you skip having to withdraw to your e-wallet, then to your bank, i dont know the withdrawal times for e-wallets, but already a poster has said up to 5 working days.
Cons of using a debit card
1) Slower cash outs, Just somthing you have to put up with, youll see alot of people say things like "i withdrew from 3dice at 11am, and by 2pm it was in my e-wallet" you wont get this with debit cards, If you deposit on a friday it could take uptp 7 days to see it ready to withdraw from your bank account, Some sites process faster than others, bet365 are probably the fastest i know, if on week days you may deposit monday and see the money by Wednesday if your lucky. Most sites you wont see the money for at least 5 working days.
2) Some sites, rare as it might be, give a bonus for using an e-wallet, you wont get this at alot of sites but i have seen it, usually only 5-10% but never the less, its a bonus.
3) and the main drawback from using a debit card is flushing, if you know an e-wallet transaction will only take a few hours / 1 day, you dont have the oppurtunity to cancel the withdraw, but using bet365 again as an option, there is no manual flushing, so youre willpower will come into play, i have a £1144 withdraw pending at bet365, and alltho i log in probly once/twice per day to check if its processed, the "cancel withdraw" option is there waiting for me to press it, after years of gambling i can say that there is no temptation to cancel the withdraw, but that has not always been the case, with e-wallets, as the cashouts are fast, you dont get days to decide to cancel, just hours.