So, you can just go look and check this, if it is actually a concern.
But, your 1911, depending upon the grip panels you use can be 1.1 to 1.3 or so inches wide.
For comparison, Wilson Combats SFX9 "2011" is 1.15", their EDC X9 "2011" is noted at 1.4", but that 1.4" is at the widest point (Safeties), which is also why, at times, you may see an sfx9 listed as the same, the actual grip width is about 1.25" on the EDC which has grip panels like a 1911.
Staccato CS is noted as 1.2" and I believe the P is 1.3"
So, the grip width on a 2011 can be fat, can also be decently thin, but similar to the 1911s you've had and the different options for them, same with many guns, CZs for example, thin grip panels will obviously be narrower than if you run lok palm swell grips. Even stippling of a poly gun can have quite an affect if one desires.
The difference in 2011 vs 1911 then, because the overall grip width at the widest point is similar, is that a 2011 is fatter for more of the grip. The 1911 frame width is only .7 something for the grip, so the widest point is really only at the peak of your grip scales, it then narrows to the front and back towards that .7 territory. 2011s aren't necessarily fatter at max thickness but are thicker for more of the total 360 degrees of the grip.
Anyways, you can then of course take those numbers and compare them to your favorite poly guns, whether Glock or HK or whatever.
