Chastity and orgasm denial discussion

I’m currently evaluating cages to decide whether to buy a ready-made one or have a custom piece built. We usually talk about the pros and cons of getting a new device, but what about comparing them directly? It bothers me that so many devices look great yet have strange gaps where manufacturers should have realized some people don’t want those features. The slots on the shaft are an example; like in some Millar CBXXXX models, if the slot is at the end, the pee or PA opening often feels too large. These openings frequently cause skin to get caught or pinched—often painfully and usually at the worst possible times. What about the holes on the sides of devices? For instance, I don’t know a clear reason for them on the Holy Trainer. I see many photos of people wearing very open tubes, including spiral designs which seem quite open by nature. All these appear to allow varying levels of access for both the wearer and their partner (KH). Are these open-style devices effective given that accessibility? Do they prevent stimulation from leading to orgasm while still allowing some pleasure (which is definitely more than a closed tube offers)? I recall hearing it was once claimed you couldn’t cum in any Lori cage, maybe this belief persists. Is that true? It seems unlikely, but I want to understand better. The tubes made by Lori are highly rated, yet all her devices have an open quality. Some seem pointless regarding stimulation prevention beyond just blocking intercourse and a simple ‘no’ from your partner would achieve that too. Spiral cages are open along most or all their length; do they still function well? How do you handle the profile/bulkiness visible through whatever garment you wear? I hope everyone can share insights on these designs and your thoughts, especially considering long-term locking periods.