i keep an eye on this service but as for me, the 3-5% you say for loading is very many to loose one the way. better withdrawal to bank at 0.09 commission that i have from the exchange ... 
of course this have some negatives also but not 3-5% !!!
Go for spectrocoin or xapo, they only charge 1.5-2% of course this have some negatives also but not 3-5% !!!