But you mentioned charge backs. Issue vs draft has NO effect on this. They pay you in 2 days, you'll be charged back if draft doesn't go through. You get paid on draft? You'll be charged back if that draft doesn't go through since they pay you before they know if it goes through or not.
Bu, if you being paid on submission, which is usually the case if you get paid within two days of submitting the app, then you are going to have a charge back if they do not issue the policy..