I love my KK and HydroFlask bottles, but it seems like the CapCap doesn't fit. I read that people talked about heating up/cooling down. That sounds fine if it works and you're home, but what happens when you're out and you need to refill your bottle. Won't it start leaking again? Are there any other tricks? I'm looking at a HF with the flip top (actually seals vs the KK top for hot coffee) but would like a CapCap for water/cold drinks. Any suggestions?