Well, I went to the range again today and did most of my shooting and gun handling with the shooting glove on (just on my shooting hand), I even forced myself to load rounds into many of the mags while gloved. I'm seeing a big difference with practice, and by the end of today's session, it really wasn't too bad. Even guns with a small trigger guard (LCP) weren't too bad with practice. So, I don't think I need to make any gun adjustments, though I may want to go with more form fitting gloves (I think most of mine will work with most of my guns, I'll have to do a lot of dry fire practice to be sure).
What I do have to say about how bad it was at first vs. now, if you ever wear gloves in the winter, at least buy some shooting gloves (or better, buy a second pair of your regular gloves) and practice with them at the range. They will effect your performance, but nothing some practice time can't help.
As for the CCW jackets, I do well enough pulling up my cover garment on the draw, even one handed, I don't think I need it. Its just an excuse to spend more money. Though, I usually only wear waist length winter coats, nothing more than an inch or two longer, so YMMV depending upon what kind of coats you usually wear. Maybe when it is time to replace a current coat or jacket I'll look at one meant for CCW, but that won't be a deciding factor. As someone else mentioned, most coats and jackets have inner pockets whether they are CCW coats or not (and at least one of mine has a quick to access snap instead of a more time consuming zipper).