No idea if this is possible as it would probably have to use the watch settings that the user has put in but a data field that could show information in both imperial and metric on the same screen would be great. I'm stuck in the dark ages and still use miles and min/miles but in the pool use metric. I am all over the place when something is showing in KM or min/km, especially when looking at official race splits and things. Is it possible do you think?
Yes, you could display both different units in a data field. You don't have access to user input, but you could cycle through them every few seconds (i.e., show metric for 5s, then imperial for 5s).