I'm a bit late to this but I used to wear them all the time. Now the ones I used were the European ones, I hear that US-made Tenas are nowhere near as good, so bear that in mind...
First off... They are NOT suitable for messing AT ALL. I mean it. Do not mess in these, don't even think about it. They are shaped very narrow in the back so they won't do anything to contain the mess at all. For the same reason, they are also totally unsuitable to wear at night. If you wet them lying down they WILL leak, and badly, no matter what position you're in. They are strictly a daytime-only, wetting-only product.
Stealth-wise, they are very good when dry, less so when wet because they contain a lot of SAP so they swell a lot.
Absorbency is very good, again because of the high SAP content, but they struggle with a full, sudden flood. They do best with incontinence like mine, near- constant dribbling. Because of their shape, they're more prone to leaking at the back, especially if you wet while sitting down.
Comfort; to me they are definitely more comfortable than taped nappies, except for one thing; the little velcro stickers on the front panel sometimes bend at the corners and when they do, that's very uncomfortable. Many times I had to snip that corner off with a pair of scissors. Their biggest advantage is being very quick, very quiet and very discreet to change, especially in public bathrooms. You can take one off and replace it with a new one in less than a minute.
If you are wanting to wear 24/7 including for messing, and at night, this is not the right product for you, unless you're planning to mix them up with something else as well, and only wear these for part of the time.