Now, we are really starting to "nickel and dime"....theortically it is possible to earn some interest due to the lag...but here is something to consider:

1) Will the interest equal the fees or even 50% of fees associated with each and every single transaction?

NO !!!

2) Will this create more headaches for someone who is trying to make this work?

YES !!

Personally, not for me

If anyone wants to try it and run a 6 month figures including your time spend, I would love to look at thew figures over a few beers !!! My treat !!