Running

Can't you use a bike garmin? I was going to use mine, as I don't really fancy buying more shiny electronic breakable things - you'd look a bit (more) daft but it would work, wouldn't it?

Wont have the same functions (pace most importantly I guess). Plus. When I did this with my old Bryton GPS bike computer. It logged all my runs as rides. Which annoyed me more than it probably should.