This was my first 4/3 lens - I got it because it worked fine on my E-PL7 - but it is faster on the E-M1. I liked it so much that I since got the 50-200, 50 F2 and 11-22Ron-
On your EM-1 that lens does a fine job - I just this week acquired the 14-54 II and am pleased with
it on my EM1 Mkii as well as on the EPL8 - Those legacy 4/3 lenses are still quite capable performers -
I don't think that would be allowed on UK roads due to the bonnet/hood ornament.