Kimo - I carry a 226 ST SIG so in weight and bulk terms it could as easily be a 1911.
I did think tho when I saw your subject line - "Does anyone carry a full size 1911 as a primary? " - does anyone breathe each day? LOL!! The 1911 following here is huge and I think many are full size or close to it. Has to be probably ''the'' archetypal carry piece nationwide for many.
Another salute to JMB