Glock 30s or Ruger 1911?
If you have to choose between these two, you know the obvious answer. The Ruger SR1911 Commander is the way to go.
But I wouldn't choose either one. For these reasons:
1. The Glock is too thick. A double stack 45 is going to be thick as shite. There is no way around that.
2. A metal-framed 1911, regardless of barrel length, is going to be heavy. If you can carry it comfortably and it doesn't bother you, then by all means go for it. But if you really want light weight carry, go for something with a polymer frame. As much as I love 1911s, I don't think I'll ever carry one because their much heavier compared to a lot of other carry pieces.
I carry a Kahr CM9 and a Ruger SR9c. If you're set on 45, I would suggest the Kahr CW45. It's a slim single stack just like the SR1911 Commander, but it also has a polymer frame. You'll be carrying this thing in your waist for extended periods of time. It's best to be prepared for that and travel lightly.