Yes & No
I've handled them in stores, but have not bought one, nor am I inclined to do so. Sigarms has a little too much marketing hype to suit me, and it has rather turned be off on their products. Actually when you say "Sig", what does it mean. To my understanding, my only real "Sig" is my P210, which was made in Switzerland. Then there is "Sig Sauer", which is the combined company of Sig and Sauer of Germany. Added to that is the American company, SIGARMS, that imports the European guns and makes the 1911's.
My observations over the years are that people buy because of price, quality or the combination of the two, which can be termed: value.
When people buy because of price, they are usually looking for the lowest cost item. Quality is rather self-explanatory, but value means quality for a good price.
The Sig's aren't the lowest priced 1911's out there, so I wouldn't buy one based on price. I wouldn't classify them in the same league as Wilson Combat, Les Baer, etc., so I wouldn't buy one based on quality (I bought the P210, P220 Sport, P226 Sport, P226 X-Five based on quality).
As far as value is concerned - I just don't know. Therefore, I don't own one.