I think the lady friend would prolly strangle me if I came home with more than one.
If you are married and plan to stay that way buy 50% of the stuff "for her". . Dating is a little riskier that way. I know people carry both of those and don't get me wrong, I am a huge fan of both the 686 and the 1911 but if I was choosing a new carry gun, I might get a lighter weight higher capacity one. There are several nice plastic guns with high capacity like the M&P, XD/XDm, etc. Generally, these are quite a bit cheaper than the others as well.
Having said that you can get a lightweight 1911. You can also get a 9mm 1911 with 10rnd mags if you want a slightly larger capacity.