Yeah, try it.
definitely make sure you’ve got something underneath you. Depending on what you’re being lent, you might have a sleeve for a mat underneath you (stops it pinging out to the side when you move in the night) or possibly an underquilt which hangs close underneath the hammock.
If you’ve got nothing, you compress the sleeping bag’s insulation and your heat just get’s whipped away in the breeze.
If it’s colder, you need a thicker mat and/or a thicker bag, same as normal camping!
One disadvantage when you’re wild camping is that you’re restricted to wooded areas (who knew!), which means finding a spot with a good view is much less likely, whether that’s a view of the sunrise, sunset, stars, or just stuff far away.
You get lucky occasionally, though