So there's obviously a lot of info here about really warm insulation systems, which is great for winter.
But I don't see a lot of discussion about summer insulation system.
You don't pack your UQ and TQ with you on summer hikes do you?
Do you choose a UQ/TQ based on moderately cold weather and then supplement that with other things when it gets really cold?
Or do you get two completely separate systems for warm and cold weather?
What kind of system do you use for weather that doesn't really get below 50s / high 40s?