Yes, that's correct. Your normal input would be blank, but in most cases, a TV will fire up to the last active HDMI input.
If you power your AFTV stick from the TV's 5v USB port, it will also switch that on and off when you power up the TV.
Oh, you'll also get live UK channels as well via the TVPlayer app (sourced from the Internet).
All this is presuming you are in the UK. If not, you just need a Smart DNS service as well.