Expires, huh? I guess what I'll end up doing is putting a small amount in a real money account just to keep it, so long as it keeps performing at this clip. It's like with my sportsbetting. If I have a guy giving out free picks, and he's making me a consistent $5K a year with those picks, and he finally decides to start charging $399.99/yr for them, I'm still going to buy them immediately. +EV is +EV no matter how you look at it.
And like I said, I'm looking for a second broker anyway to use for longer plays, so I can scale in/out from my phone as the day progresses. I'll still use Oanda's charts in all likelihood, so I'm not worried about that.
If this winning % keeps up, you bet I'll be on board! I'll update again next Saturday.