Skadoosh, the SR40c is lighter and shorter. Whether it is more "suitable" is a personal call. Of the two, I would (and often do) carry the 1911.
Barrel length of 5" or less is easy enough to conceal, IWB. The 1911 is thinner than all my other autos except my PPQ.
The grip isn't small, but is thin enough and tucks in pretty tight - with the right belt and holster combo.
And, with the right belt and holster, the weight isn't really a big deal - at least, not to me (healthy mid-40s male).
A smaller person might have problems, but I know some smaller women who carry 1911s, so it can be done. Health and age may also matter.
But the 1911 can be very suitable for carry.