TC does take some time to fully cure (8 weeks), but after that, it becomes hard and durable, so it can be plugged & unplugged without reapplication being necessary. Even after it is fully cured, it can be removed easily with alcohol, if that is a concern.
I would choose connections that you can leave alone for 8 weeks to try it initially. You should notice improvements right away, but there is a substantial bump at 4 weeks, and an even bigger one at 8 weeks. Mark your calendar, because, IME, they are pretty much to the day. Don’t be alarmed if things go south, at times, during the first week of break in. It can be a little bit of a roller coaster, but, if the sound is “off” on a particular day, it will come back better the next. I know all this may sound like a pain, but the end result is definitely worth it.
If you want to try PPT in a more convenient, easily reversible way, with less break in time, I would recommend the Alpha card or Omega mat.