i tried this lens on my ep1 late last year at photovillage in nyc and looked thru the viewfinder for 10 minutes , not long unuf to know it but i was impressed by it
i currently have the 57 1.2 konica slr lens ,but the 1.1 lens has less heft and volume but its still big ,[its a rangfinder lens]the voigtlander might be slightly more contrasty too \
its a newer design so perhaps sharpness is better wide open than mine whish is pretty good