Hey!
That's an interesting solution. Though there are few things to consider.
First of all, I am not quite sure if it is a really good idea to make payments through 3rd party service. As I understand all the risk falls on customer.
Also there may be some technical issues while implementing the software. For instance, there is a certain bug with R9 290 cards when the system goes to BSOD on cgminer quit (that is when the pool changes). And once again, it's the 3rd party software that may be malware.
Probably in not so distant future we will develop some solution on our own.
Thanks!