Finally getting to post up a short review.
Ok, I now have the extensions that were ordered by my Snap On dealer. Very nice fully locking driver extensions. I recommend them.
As far as service, he did order multiples of this tool this time around so the next Joe can get them more quickly. My Snap On dealer works 5, 12 hour days a week on his route. He always stops by every Friday. My delay was a rarity, according to the dealer AND the employees of the shop.
All in all I'm happy. I don't spend a bunch of money on Snap On tools but the service (at least in my neck of the woods) is very good.