Is the Holy Trainer suitable for long-term use and safe enough for continuous wear?

It’s pretty clear that if you want to be locked up around the clock, a stainless steel unit is your best bet. However, newcomers who want 24/7 confinement often begin with either a CB series or an HT model. My KH and I have been practicing MC for over two months now. For me, it’s roughly a 40/60 split (I’m actually in my HT about 40% of the time) due to various factors like device fit, her leaving it off for a few days after sex or during vacations, etc. Last Saturday I admitted that I had masturbated several times since we started because I had plenty of free time. She seemed quite disappointed, and I felt terrible. Yet, I finally caught a glimpse of the KH I wanted; she quickly threatened to lock me up for two weeks straight with very little break time. Usually, I only stay in for a couple of days before we have sex, so going without release for a week or two is rare for me. That works well though, as I’ve been eager for her to take this more seriously, and it seems she finally has. For example, I gave her a charm bracelet with the custom key to my HT. She usually takes it off at night but leaves it on the bathroom counter; I could easily grab it and unlock myself if needed without her noticing much. I wouldn’t do that because it goes against the spirit of the game, but I felt some rebellion was necessary to encourage her seriousness. Now she keeps the key with her constantly, meaning I have no access to unlocking myself at all, which signals she is definitely keen on keeping me locked up. Apologies for the long explanation, but my real question is: how durable is the Holy Trainer in the long run? Many people start with them and then move on to other options. Personally, I’m eyeing the MM Jail Bird, but I won’t buy it until I know my KH is truly serious about this lifestyle. So what are the potential issues with wearing the HT2 for 24/7 confinement? Am I likely to face durability problems or health and safety concerns? If you have experience with this, please share your thoughts. Thanks.