Those must be new, I just looked them up on 3R. The Phathead was always a 4 blade head, double bevel. Basically, what you're asking about is a 2 blade single bevel with no bleeder. While I love the "regular" Phathead, with 3/4" bleeders, the main blade is only 1". Now, with bleeders it's 1" x 3/4" and it's a crazy good head. But without bleeders, you have a 1" wide single bevel. A 1" 2 blade could result in poor blood trails. If it was me, I'd get the 145gr "regular" Phathead, double bevel with bleeders. You'll love those.