Well.... I have the digital dash in the F10 but turn it off and use the dial. But.... I use the cruise control most times on the motorway and that does show a digital readout! I'll have to test it - I normally set it for 84 on the motorway and my assumption has always been that's a 'real' 76/77 which you're unlikely to get pulled for.
I'm not sure to be happy or sad if I find the speedo is actually more accurate