What I am doing now....

My current method of choice is...
Daytime (school / class / weekends or at home): TLC-X with the 24mm spacer
Nighttime: Trombone mouthpiece (how to wear it )
Sports or swimming: Just tape as a retainer, sometimes
Changing rooms: nothing, ever. My fauxskin does its job and keeps me covered.

This seems to be the best choice since wearing the tlc-x to bed can be annoying if you arent awake to adjust it if necessary. So you would subconsciously take it off in the middle of the night and ruin your progress from what was 24/7 tension.

The only downside is that you have to take off the TLC-X to pee but that just means you need to use the stall and be quick. But it is no big deal, just make sure you put it on properly afterward with diligence so that it doesnt slip off suddenly during your day. It hasnt happened to me but it could and you just have to be careful to check whether you think it has made a good fit on your junk. If it feels sketchy then chances are it will not stay on!!