Those look super nice. The zipper there is key! I’m also relatively new to the world of bib shorts, and, while I do love the feel of them, a standard pair (i.e. no fancy schmancy zipper) makes nature breaks for the ladies a major pain in the @$$.
Zipping is easy. You can do it with one hand, not hard at all.
Have not come to a firm conclusion about the tri outfit. The manufacturers take two approaches. One, make cycling shorts that can be immersed in water. Two, make swimsuit (bottom half) that can be ridden on a bike.