Yes I do mean instant
I suggest we keep 'current' as 'current' or 'possibly short trip' or even 'current trip'? DTE l is a bit ambiguous IMO - my initial thought was that it might be from the last X minutes of driving - sort of like a Prius histogram.
I could see one screen setup for long distance drives being useful where DTE calculations are front and centre. It's also fun to watch your DTE increase as you hypermile, and this could be a good incentive for some.
So yes, definitely happy to give other people's screens a go. With the current Guino or SG you don't get a lot of freedom, so you have to prioritize a bit more.