Pros: It's small, very much like a 1/4" ratchet size wise. Not a tiny 1/4", but smaller (mainly thinner) than the AP Nano ratchet bodies.
Cons: Same strength as their 1/4" ratchet, so 1/3 the normal 3/8" drive torque. Meaning it wont replace your daily 3/8", and probably why they arent available...