Would be great if a tempo could be squeezed into the main screen at all times - or at least the option.
As far as I can tell, there is no way of checking the tempo unless you hit the tap tempo switch (and change the tempo.
Also would love for the QC to send midi clock out to, say, a strymon timeline, so at least the external pedal would then show the tempo!
Gotta bump this one. It’s still impossible to see the current tempo on any screen. You can only see the tempo by tapping the tap tempo twice … which means it’s already changed by the time you see it 
To tell the tempo without changing it, double tap and hold the tempo switch for a second.
That simply doesn’t work.
Holding it = the tuner
Double tap = change the tempo
Double tap and holding on the 2nd tap for 1 second = changing the tempo and then getting the tuner
Have you actually tried this?