Finally plucked up the nerves to pick up a pack of, ahem, "Adult disposable incontinence briefs" (or whatever buzzterm they use for the things). Got Tena Super Briefs, medium size, and Tena Classic Plus, large size.
For me, diapers represent what would be one of the final steps in a power-loss scenario, that being unable to control even your own bodily functions. Ergo, it's a sexual thing for me, not an adult baby-like fixation. As such, I've always enjoyed fantasies with diapers that encumbered or weakened the wearer. It is this, I believe, that may have led to the rather disappointing results with indulging my personal sin; real life, simply put, cannot match what one's imagination can cook up.
I wore them for several hours each, put both through a semi-thorough wetting, and experimented with up to three layers (two Supers and a Classic Plus). While I enjoyed the feeling of having my legs forced apart, it wasn't enough to meet my expectations, and to put on enough layers to achieve that effect would most likely result in several wasted diapers since the tapes are cheaper than dirt bought wholesale. The warmth and squish of a wet diaper was also enjoyable, but making sure I didn't flood them required far more attention to maintaining flow from the lemon-squeeze than I would like, not to mention clean-up, disposal, and dispersing the (admittedly mild) smell.
To top it off, privacy is a rare commodity where I live, and the threat of discovery (assuming my tech-savvy father hasn't already picked up on it from my internet history, which I was rather ignorant about years ago) looms over like a black scythe. While there is something to be said about the thrill of avoiding discovering, the associated anxiety far outstrips it.
In the end my verdict is that, while I found it to be an interesting experience, it's too much of a hassle, and the risks too high, to be worth the mild boost in enjoyment. I intend, with any luck, to return the Tena products for a refund with the cock-and-bull explanation that my grandpa found them to be inadequate. Having only used one of each (one-and-a-half, if you include the one I briefly put on over top for layering), I should hope they'll accept it.
Perhaps, when I have a place of my own and can order higher-quality products discreetly, I'll try again.
The Tena Super's tapes are actually like velcro. It works, but hardly carries the "unlimited adjustments" boast like the package claims. The Classic Plus' are simple and somewhat ineffective adhesives, which is to be expected considering its bargin-bin pricing. In terms of absorbency, neither was tested to absolute capacity, although the Super took a fairly impressive (by my guessing, it being the first time I've partaken meaning I could simply be ignorant) bladder-emptying. For the Classic, I was careful to do it slowly since I didn't know how much it could handle, or how quickly it could wick it away. By the end, with all the re-adjusting I had to do since I seem to fall into a dead zone between the two sizes (or am simply inept at putting them on), they had effectively fallen apart, with tapes ripping off and the padding clumping up.
Unless you're looking for a quick fix and they're on sale, I don't think Tena is going to be your brand of choice.