I have an F1 and couldn't be happier with the knife. They put a lot of time and thought into the design. No frills, all function.
I was so happy I ended up getting the H1 (same knife, slightly different blade) and a couple of WM 1 knives as well. Sometimes the F1is just a little large. I can't recommend the WM1 highly enough either.

Sharpening a convex grind knife takes a little getting used to however. I would recommend the DC 4 sharpener if you are in the market. It's designed specifically for fallkniven blades. Cheap stones don't work so well on high end steel.