It would be a good feature I think to allow payment split in multiple processors. Something to consider.
Well,
Sending Money to seller partially from one and then from others is a bad bad idea .
I quite agree. It is however, one which is encouraged by the various credit card companies from time to time. In fact, at one point, VISA was going to require this capability from all ecommerce merchants.
They had to back off, as most of them refused to implement the capability.
That said, there are a number of interesting requests in terms of managing checkout floating around out there - many of them from experienced brick and mortar vendors who want to parallel their physical store operations more closely on the web. ...