I have been leveling all 8 crafts in conjunction, and these tools are missing from them all. At one point I actually decided to compare stats between the "Novice" offhand on the AH and the current LVL. 23 HQ offhand I was wearing and, minus the CP, they were exactly the same stat. The ONLY thing the missing "Novice" item has over the HQ LVL. 23 offhand is +2 CP. So not really make or break. Though interestingly, the LVL 31/32 HQ offhands for all 8 crafts are still pretty large jumps in stat compared to the main hand. I remember gaining around 10/12 Craftsmanship/Control when I dinged into the 31/32 offhand.

It could be something they removed from the game for whatever reason. Maybe they felt they didn't want to add CP to the main/off hands at that low a level. I doubt it's a coincidence that the LVL 23/24 HQ's have the exact same craftsmanship/control as the missing LVL 28 novice items though.