my son is 18 months and i am going to be trying the 'run around outside naked' idea. LOL. will see how it works. obviously the only thing he will be wearing is sunscreen LOL :D maybe you coudl try it too. i will also bring his little potty chair outside!
he has been talking about the potty, sitting on the potty and really interested in the whole process for about 8 months. LOL. so ive been kinda using some cloth diapers, elimination communication (if he talks about the potty or anything, he sits on the potty. sometimes he goes sometimes he doesnt) i try to get him on the potty in the morning, or after a meal if i have time to get him there right away. also if i am running a bath he sits on the potty cuz it seems like he pees if the water is running. good thing to try when your kid is sitting on the potty is simply running water.
dont let anyone tell you your son isnt ready. if you think he is, and you dont expect him to learn it overnight, it is just fine to start talking about it and learning about it. people always say they wont even try until they are 3... well, by that age, they dont know anything else if they havent been talking about it and doing it! they actually get to the point where they LIKE being in the diaper.
a friend of mine started elimination communication when her son was 3 months old. he is now 19 months old, and although he isnt completely 100% trained, he knows about potty, he knows to tell mom and dad when he needs to go, and he will go excitedly. he hates being in a dirty or wet diaper - they use mostly cloth diapers, so its been easier for him to feel wet.
anyway, if you think your son is ready, and you have the patience and time, GO FOR IT! theres nothing wrong with introducing the idea. just dont get frustrated and disappointed. just yesterday my son told me 2 times he had poopy, but he wouldnt go until 5 minutes after the 2nd time he was on the potty (and in his diaper - bummer!) but he KNEW he had to go... theres just something there that interrupts him when switching the diaper off and getting onto the potty. so i know he KNOWS whats going on. dont let people tell you that your kid isnt ready because of age. every kid is different, but you have to be willing to put in the time and communication.
this works best in kids who have a healthy connection to their moms and dads, cuz you can read them. it sounds like you can read your son pretty well, so just go for it! :D theres nothing wrong with following your instincts and your sons! :D good luck!