We're potty learning at our house too. We started at the end of February (when my son was 26 months). He's pretty good at pee, but very hit and miss with poops. He definitely prefers pooping in his clothes.
I wish I bought these http://www.betterforbabies.com/imse_...ing_pants.html
, but they seemed so expensive at the time. They work like pull-ups because they catch a little and can be unfastened instead of pulled down, which could probably do wonders for my mood when I am changing poopy underwear...again.
When we go out, I usually choose padded underwear (we have some lightly padded and some regular underwear) and sometimes also wind-breaker type pants. Of course, that can completely camouflage an accident, so I have to keep checking. We also talk up any public potties. "Wow, I just loooove the potties here, let's go look!". We have a bigger problem not checking every.single.potty. than having accidents out now (we've been at it for 2 months).
My little guy was the same as yours about not liking being naked. When I started, my plan was to keep him naked for a whole week and just observe his habits, and have a little potty available. I didn't expect him to use it at all (and had lots of cleaning supplies ready...), but he did use it some, and I learned a lot about his habits. Including that he doesn't love being naked.
I still do let him be naked some of the time, as often as he'll let me when we're at home. He almost never has accidents when he's naked. He also can't pull his underwear up yet (not over his bottom).
With poops, he's gone to the potty on his own to poop maybe 2-3 times (in 2 months!). If he makes it, it's usually because I can tell he's starting and I make it exciting to go now.
Oh! And that reminds me of some other things we do. It was important for me that we not use rewards since we plan to not use them in our parenting journey. And pretty much every thing I read expects you too. (Except Montessori from the Start, but I feel like what it said set me up to be in a bad mood about it by giving me unrealistic expectations). But we do make going to the potty fun! We had him pick out some special books (including one new one from the store), and once at the store a few weeks ago, he REALLY wanted this Easter toy. I think this is the first time we ever bought him a toy that he just wanted at the store. But, we told him we could put it in his potty basket. So, he's exciting to go to the potty and use his "spinning toy". We also have cut-out shapes from sponges (triangles, mostly). He loves to sit on his potty and put sponges together to make designs on top of his stool nearby.
Whenever his interest is lacking (it was
high when we started, though). We set up "potty kits". Fun things for him to pour into the potty before going. At first we started with blue food coloring. I got out a tray, a small glass creamer with a little water in it, gel food coloring, and a small whisk. I showed him how to put a little color in the water and whisk it. Then, excitedly, we went to pour it into the potty. "Let's see what happens when we add yellow pee to blue!". That was lots of fun and we tried other colors as well. When he bored of that game, I got out an eyedropper (as I noticed he was having lots of fun with one the day before). I made a tray with 3 shot glasses, and eyedropper, and the small glass creamer. I filled the shot glasses each with yellow, blue, and red food colored water. (But after the first time, ran out and got natural food coloring because he put some in his mouth and I FREAKED out...). I showed him how to mix his own color in the creamer and we went to pour in the potty and add his pee (or poop). We've tried lots of variations of this, adding bubbles sometimes. I haven't done it in awhile, unless he asks (because he's pretty good at getting there now). But it really helped when interest was fading...and I went through plenty of days wondering why was I forging ahead, should I just wait longer? But, today, I'm glad we stuck with it.