Personally, I wanted to use the Garmin device for portfolios with OpenStreetMap, but also for hiking and biking. The Garmin goes back today and I am looking forward to the Xperia Active, although I will certainly sacrificing battery life - with a second battery is then obligatory.
As I said, I would like to not detract from the power of Oregon, but me personally has a outdoor smartphone with z.Bsp. Locus Maps much more possibilities for comparable price.