We haven't made the move to convertible carseats yet...so we still use infant carriers, but with our big boys I don't know how long that will last.  they are 6 months now - still 10 lbs to go for the weight limit on the seat but they look so big in them.  Anyway...I just don't know exactly how to get around without them as well.  I am sure we'll figure it out, but if you have ideas I would appreciate them!  We live on a 2nd floor apartment so I guess I will have to buckle one in the car and get the next (right now I can leave one at the top of the stairs so I can always see both.)  Then when you want to just "run in" somewhere and I carry both seats that will end.  I guess always have the stroller?  Some places aren't even made to fit the stroller well. My back already hurts. haha.  I just don't think carrying both in my arms works well.  Do you ever put one in the carrier and just hold the other?  It seems like a disaster waiting to happen?                
                             
        
Re: Getting around after the move to convertible car seats?? help
Dx: MFI- 3% morph
IUIs: Gonal-F + Ovidrel + b2b IUI= BFNs
IVF with ICSI= BFP! EDD 11/25/11
3/18- Beta #1 452! 3/20- Beta #2 1,026!! 3/27- First u/s- TWINS!
Our twin boys arrived at 36w5d due to IUGR and a growth discordance
Be kinder than necessary, for everyone you meet is fighting some kind of battle.
I wouldn't be comfortable leaving one in a car while I go back upstairs for the other. I did put mine in the car one at a time but we had a 2-story rented apartment and my car was 3 feet from the front door, so I could buckle one in his booster seat just inside the door while I put brother in the car.
If I had stairs to deal with, I'd put one in an Ergo or similar carrier, and carry the other on my hip.
That aside, when I got where I was going I would put them in a stroller or double shopping cart. At someplace like a drugstore w/no double carts, if I couldn't use the stroller I'd put one baby in the cart and wear the other in the Ergo. If I was going to a friend's house I might run in with the first baby and go back for the second or have them meet me at the car to help carry them in, up until they were walking well. (We moved to convertible seats at 7.5m and my boys started walking at 14m and almost 16m respectively, but I still used the double stroller quite a bit until 2.5; I kept it in my trunk until 3.)
I was wondering about this too. I really like the idea of one on hip and one umbrella stroller.
I think that's what I'll do when we get there.
ID Twin girls 04/2012
Baby #3 Due Jan. 2017
I either use my stroller or a double shopping cart all of the time. I have a Combi and it fits through doorways no problem. My guys weigh 20lbs each and I have some back issues, so I really try to avoid wearing one and carrying the other for any length of time.
I have a house with a garage so I don't have the issue of getting them to the car. For that I probably would wear one and carry the other.