The one advantage of the lighter sky is the absence of a halo just above the horizon. I would be tempted to keep the darker sky and try to eliminate the halo.
Thanks for your comments Eric and Julie. I am not really sold on my last version, but wanted to hear reactions before saying that myself.
I think part of the drama may involve the halo.
It's easy to print a darker sky and no halo, but then the background will become flat and almost merge with the background mountains. I'll play with some alterations and post something soon.