I have been messing around with my new srk a bit, no dulling that I can tell. I think they are good to go honestly. I'm sure I can dull it, but if you're mindful of how you jam the knife in the sheath you should be fine. Just like with the BK2, make sure you don't draw the edge against the sheath and you're fine. It's a little annoying but not a big deal really imo.
And yes, Beckers are awesome. My bk2 is simply a beast, but i did convex the edge to make it more slicey. It's too thick to be truly slicey, but I'd trust my life to it. My bk10 is thinner and a better knife I think, but the 2 is just... Indestructible. I need a bk7 too... Theyre just awesome blades.