My son is almost 2.5 and he's been out of diapers for a week now. My husband is a stay-at-home Dad, has the patience of a saint, and he just takes my son everywhere in his underwear, just goes along with their day and brings several changes of clothes. We haven't had an accident in public (or the car) yet, he seems to hold it when we're out? But he also is terrified of public bathrooms (too loud). The first few days when he would start to pee on the potty, he would stop the flow and start crying. The first time I got him to empty his bladder, I tickled him so he would relax. After that, he stopped being scared and while he doesn't yet go on command, he's peeing on the potty at least twice a day without the long stints sitting in the bathroom reading books.
I honestly think potty training has to be all or nothing for it to stick. We chose to stay away from Pull Ups and training pants because we don't want to create any confusion. But we also are moving 700 miles away, in 6 weeks. So we can't be wishy washy about it. Good luck!
(By the way, a friend of mine told me it took 2.5 weeks to get his daughter to the accident-free zone, from the first day of no-diapers).