In my 8 mile commute the posted speed limit changes 5 times (6 if you include the speed limit on my residential street). I still prefer analog.
Your trip each way is short. I'm talking about multiple speed limits and
20+ mile trips, so there is lots more having to look at the speed. I don't think I'd have an issue driving 8 miles at a time, either.
Whether I have zero speed limit changes, or a 100 of them, it doesn't matter: I don't find an analog speedo difficult to read, in fact quite the opposite.
I'm currently driving cross-country and my rental car (Ford Fusion hybrid) has an analog speedo; in this case the 12 o'clock position is 60 MPH. I can't tell you how many speed limit changes I've encountered in the last week or so, but it's not been a problem. I could configure the dash to give me a redundant digital speedometer read out but I choose to have the eco-display (showing when the car is in regen mode, among other things) showing instead.
Blue Ocean 2012 Leaf SV, lost that 1st bar on 11/21/2015 at 26,435 miles.
Lease returned on 12/23/2015. Final LeafStat figures: 225 Gids, 17.44 kWH, SOC 91.89%, SOH 82.36%, 69.49% HX, 54.57 Ahr, battery temp 61.8 F
Now driving a 2015 VW eGolf SEL