I too have a pair of the V 2.0 Korkers. They are probably 4 yrs old now, and area nearing the end of their life. I am once again looking at Korkers for my replacement boot, and will probably buy a pair of the Redside boot because I am a bit cautious of the boa lacing system.
I often use the hiking sole / felt sole combo for day trips to the park. I hike in wearing the hiking sole, and change into the felt sole once I reach the stream. However, the V 3.0 system appears to be much more user friendly than the previous version that required a key to properly secure into place.
I also have a pair of studded Kling-on soles that I wear on the Clinch and SoHo that give me extreme confidence in my footing.