The Shield is a great carry gun. Were I to list the 'top 5' carry options on this planet for me, the Shield would be on that list.
I had one, carried it often, and really liked it. I actually sold mine because I preferred the Springfield XDs45. Both are very shootable micros. But I prefer 45acp and consider the grip safety of the XDs a major upgrade over the (somewhat difficult to de-activate) tiny thumb safety on the Shield. The safety was the critical sticking point for me. I had the two of them for a good 6 months and was careful to choose whichever would best suit my needs. But both are great. If not for the XDs, I'd still be carrying a Shield.
Buy a super reliable carry pistol that works for you. Consider the input of others, but don't live by it. We all subscribe to varying demands and expectations.
"The Future is Unwritten"