Can we add metric prefix to dur function?

[Andrea Fontana]

Every time I use dur, I can't remember if it is "seconds" 
"second" "sec" "millisecond" "milliseconds" "msec" "msecs" etc..

Can't we add the metric prefix as alternative?

For example:

1.dur!"s"
10.dur!"ms"
20.dur!"µs"  <-- (altgr+m on my linux keyboard)
12.dur!"ns"

We should add also non-SI abbrevetion for other common accepted 
units like:

1.dur!"m"
1.dur!"h"
1.dur!"w"

Andrea