Do it all the time.
It gets a bit tunnel-visiony at times. But there’s still loads of wonderful stuff to see. Esp when the moon comes out and you are on tops of hills.
As for traffic – what traffic? After dinner time on country roads there’s no bugger about. Bit of reflective gear, a fast flickery rear light as well as a steady one, you’re probably safer than during the day. Oh and if you double up at the back you’ll have backup automatically, but also see if you can add a second front light – doesn’t need to be on, but if you have a failure or a battery runs out it’ll be vital.
For extra effect do it after about 11pm. The small hours, you have the world to yourself, it’s awesome.
Only downside is passing those little country cottages where people don’t bother to shut curtains and you glance inside to see someone curled up on sofa watching telly with a beverage and a snack and a warm fireplace…. But then you have your own cosy sofa at the end of the ride 🙂