Single-bevel Laser!
"I was intimidated by long slicers for a long time, but was told I'd be taking care of the roast (cooking and carving) for Christmas this year and bit the bullet. This White Tiger (that's the name, for extra badass points) is absolutely incredible. The balance is great, it feels amazing in the hand, and Colin (Knifewear Calgary) brought it to me so sharp that it doesn't make any noise breaking through a newspaper, never mind a steak crust! It's rust-prone, so keep it dry, but that also means it'll patina in amazing ways - I've sliced one steak with it and it's already taking on that amazing blue/iridescent colour that carbon knives pick up as they break down protein. If you're looking for a slicing knife, look no further. This thing is unbelievable."
