Hmm, I'd have to try both first to be sure. But I'd probably go with the breechcloth.
Deerskin breechclout here. Unless it's like 10 to 15 degrees Celsius...then I might wear a fur one.
We had fine and warm weather here in Germany today, so I took the opportunity to don a blue breechcloth and go out for a (short) hike. A great way to welcome springtime.
If I had to choose from these two, I probably would take the breechclout, preferably with one end tied to the suspender.
But since I actually wear loincloths on a daily base ...
Usually, I wear a front-flap tied one, but I also do a bahag-style tying. It usually depends on the length of the strip.
Sometimes, I go for a small bit of extravaganza and do something with two front flaps.
Breechclout, hides everything the law says I need to hide,
I like what they are in the style of man or wild boys (raised in the jungle) gives a more unique look, a bit mischievous and makes them look cute.