That sounds really bad Omega. I will sample some testers and come back with some results ( this may not happen anytime soon, however). Its good to get a few noses in to make sure. Sometimes testers can be bad...etc. I have noticed testers at Sephora can feel warm from all the bulbs. I am not saying you are wrong, just want to make sure.
I never knew London for Men had oakmoss. I will check my bottle at home to see if it is an older one. I got alot of wear out of my first bottle, but my second bottle hasn't seen much action because I've just been into other scents.
I do know there are still fragrances with oakmoss still used in them. The current Kouros, Giorgio for Men and Declaration all still use oakmoss ( in their new bottles).
Reformulations are usually bad news, so I hope the tester was off.