I actually think tykables are relatively easy to conceal when they're dry. They swell more than some of the other premium diapers when they're wet, which makes it harder at that point, but dry ones are easy.
I'd weigh in on that saying they appear to be very quiet for me, except if something brushes against my front where the tape panel is, that's not as quiet. But overall very quiet. Although they're thinner than a lot of premiums, the crotch is pretty wide, and they're lower cut than others. (sizing about the same as Bambino that way, about 1/2 size small) So they can disrupt normal walking a little depending on how you tape them on. A large waddler has a shell length at least 2" shorter than most other brands' size Large. (you may have to attach the lower tape very close to the upper tape to get a good fit)
The biggest issue I have with them is, for reasons I haven't figured out, they make me sweat a lot. Something about the padding that's not breatheable I guess. The regular snuggies weren't that way. So they're off my list for choices of regular daytime diaper.