I'm interested in the 2.0 versions but the .45 2.0 isn't in many hands yet.

What are the shooting characteristics of these?

When I watch video's of guys firing the gen 1 .45 it seems like it has less muzzle rise than the 9mm.

I have a Shield .45 I've really enjoyed shooting and can only imagine how nice the .45 full size 2.0 must shoot. Makes me wonder if the 9mm is smoother still?

Also, do both caliber frames have the same thickness and length or are they different?