Yes, the USB Out still works (I wired directly off the battery), I've taken to carrying the adapter that fits my phone, just in case I need it. I generally prefer having a cut-off switch as well, but there simply wasn't room. I *might* manage to wedge a small LED into the next one, or cross-connect to the existing charging light, but even that is tricky.
If there's a problem, it's that the blue light for being fully charged is too damned bright in a dark room or car, I have to be careful to aim it away from myself or get dazzled when it hits full charge.
--Dave