Well, we likely misinterpreted this, but based on what we'd seen in that other player's book (I believe it was FRCS now that I think about it), we'd thought the cutlass was a light weapon. This was rather crucial to the current char build, as I've taken Weapon Focus (cutlass) with the idea that I can duel-wield them at only a -2 (TWF + light (we thought?) weapons). If cutlass is, in fact, a one-handed weapon (as scimitar is), then I'm going to need to switch to a dagger in offhand (need slashing weapons for a feat I'm planning, Snowflake Wardance from FB).
Also, based on what we'd pulled from FRCS, cutlass was slashing & piercing, making it superior to scimitar when fighting underwater.
Edit: THANK YOU, Mr. Brunner! Whee, duel-cutlass-wielding bard/rogue/swashbuckler/warchanter -- AAARGH in the key of G-major as he wardances around the tavern!